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facilities modifications and are issued a new construction permit must satisfy all complaints of blanketing interference which are received by the station during a one year period The period begins with the commencement of program tests or commencement of programming utilizing the new antenna Resolution of complaints shall be at no cost to the complainant These requirements specifically do not include interference complaints resulting from malfunctioning or mistuned receivers improperly installed antenna systems or the use of high gain antennas or antenna booster amplifiers Mobile receivers and non RF devices such as tape recorders or hi fi amplifiers phonographs are also excluded c A permittee collocating with one or more existing stations and beginning program tests on or after January 1 1985 must assume full financial responsibility for remedying new complaints of blanketing interference for a period of one year Two or more permittees that concurrently collocate on or after January 1 1985 shall assume shared responsibility for remedying blanketing complaints within the blanketing area unless an offending station can be readily determined and then that station shall assume full financial responsibility d Following the one year period of full financial obligation to satisfy blanketing complaints licensees shall provide technical information or assistance to complainants on remedies for blanketing interference 28 FR 13623 Dec 14 1963 as amended at 52 FR 25866 July 9 1987 73 319 FM multiplex subcarrier technical standards a The technical specifications in this Section apply to all transmissions of FM multiplex subcarriers except those used for stereophonic sound broadcasts under the provisions of 73 322 b Modulation Any form of modulation may be used for subcarrier operation c Subcarrier baseband 47 CFR 73 319 c enhanced display page 148 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR
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73 319 c 1 Radio Broadcast Services 1 During monophonic program transmissions multiplex subcarriers and their significant sidebands must be within the range of 20 kHz to 99 kHz 2 During stereophonic sound program transmissions see 73 322 multiplex subcarriers and their significant sidebands must be within the range of 53 kHz to 99 kHz 3 During periods when broadcast programs are not being transmitted multiplex subcarriers and their significant sidebands must be within the range of 20 kHz to 99 kHz d Subcarrier injection 1 During monophonic program transmissions modulation of the carrier by the arithmetic sum of all subcarriers may not exceed 30 referenced to 75 kHz modulation deviation However the modulation of the carrier by the arithmetic sum of all subcarriers above 75 kHz may not modulate the carrier by more than 10 2 During stereophonic program transmissions modulation of the carrier by the arithmetic sum of all subcarriers may not exceed 20 referenced to 75 kHz modulation deviation However the modulation of the carrier by the arithmetic sum of all subcarriers above 75 kHz may not modulate the carrier by more than 10 3 During periods when no broadcast program service is transmitted modulation of the carrier by the arithmetic sum of all subcarriers may not exceed 30 referenced to 75 kHz modulation deviation However the modulation of the carrier by the arithmetic sum of all subcarriers above 75 kHz may not modulate the carrier by more than 10 4 Total modulation of the carrier wave during transmission of multiplex subcarriers used for subsidiary communications services must comply with the provisions 73 1570 b e Subcarrier generators may be installed and used with a type accepted FM broadcast transmitter without specific authorization from the FCC provided the generator can be connected to the transmitter without requiring
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any mechanical or electrical modifications in the transmitter FM exciter circuits f Stations installing multiplex subcarrier transmitting equipment must ensure the proper suppression of spurious or harmonic radiations See 73 317 73 1590 and 73 1690 If the subcarrier operation causes the station s transmissions not to comply with the technical provisions for FM broadcast stations or causes harmful interference to other communication services the licensee or permittee must correct the problem promptly or cease operation The licensee may be required to verify the corrective measures with supporting data Such data must be retained at the station and be made available to the FCC upon request 48 FR 28455 June 22 1983 as amended at 48 FR 37216 Aug 17 1983 49 FR 15080 Apr 17 1984 49 FR 38131 Sept 27 1984 50 FR 1534 Jan 11 1985 51 FR 17029 May 8 1986 57 FR 48333 Oct 23 1992 73 322 FM stereophonic sound transmission standards a An FM broadcast station shall not use 19 kHz 20 Hz except as the stereophonic pilot frequency in a transmission system meeting the following parameters 1 The modulating signal for the main channel consists of the sum of the right and left signals 2 The pilot subcarrier at 19 kHz 2 Hz must frequency modulate the main carrier between the limits of 8 and 10 percent 47 CFR 73 322 a 2 enhanced display page 149 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 322 a 3 Radio Broadcast Services 3 One stereophonic subcarrier must be the second harmonic of the pilot subcarrier i e 38 kHz and must cross the time axis with a positive slope simultaneously with each crossing of the time axis by the pilot subcarrier Additional stereophomic subcarriers
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are not precluded 4 Double sideband suppressed carrier amplitude modulation of the stereophonic subcarrier at 38 kHz must be used 5 The stereophonic subcarrier at 38 kHz must be suppressed to a level less than 1 modulation of the main carrier 6 The modulating signal for the required stereophonic subcarrier must be equal to the difference of the left and right signals 7 The following modulation levels apply i When a signal exists in only one channel of a two channel biphonic sound transmission modulation of the carrier by audio components within the baseband range of 50 Hz to 15 kHz shall not exceed 45 and modulation of the carrier by the sum of the amplitude modulated subcarrier in the baseband range of 23 kHz to 53 kHz shall not exceed 45 ii When a signal exists in only one channel of a stereophonic sound transmission having more than one stereophonic subcarrier in the baseband the modulation of the carrier by audio components within the audio baseband range of 23 kHz to 99 kHz shall not exceed 53 with total modulation not to exceed 90 b Stations not transmitting stereo with the method described in a must limit the main carrier deviation caused by any modulating signals occupying the band 19 kHz 20 Hz to 125 Hz c All stations regardless of the stereophonic transmission system used must not exceed the maximum modulation limits specified in 73 1570 b 2 Stations not using the method described in a must limit the modulation of the carrier by audio components within the audio baseband range of 23 kHz to 99 kHz to not exceed 53 51 FR 17029 May 8 1986 73 333 Engineering charts This section consists of the following Figures 1 1a 2 and slider 4 and 5 Note The
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figures reproduced herein due to their small scale are not to be used in connection with material submitted to the F C C 47 CFR 73 333 enhanced display page 150 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 333 Radio Broadcast Services 47 CFR 73 333 enhanced display page 151 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 333 Radio Broadcast Services 47 CFR 73 333 enhanced display page 152 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 333 Radio Broadcast Services 47 CFR 73 333 enhanced display page 153 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 333 Radio Broadcast Services 47 CFR 73 333 enhanced display page 154 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 333 Radio Broadcast Services 47 CFR 73 333 enhanced display page 155 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 333 Radio Broadcast Services 47 CFR 73 333 enhanced display page 156 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 401 Radio Broadcast Services Secs 4 5 303 48 Stat as amended 1066 1068 1082 47 U S C 154 155 303 28 FR 13623 Dec 14 1963 as amended at 35 FR 2591 Feb 5 1970 40 FR 27679 July 1 1975 45 FR 28141 Apr 28 1980 48 FR 29508 June 27 1983 49 FR 19670 May 9 1984 Effective Date Note At 42 FR 25736 May 19 1977 in 73 333 the effective date of
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Figures 4 and 5 was stayed indefinitely Subpart C Digital Audio Broadcasting Source 72 FR 45692 Aug 15 2007 unless otherwise noted 73 401 Scope This subpart contains those rules which apply exclusively to the digital audio broadcasting DAB service and are in addition to those rules in Subparts A B C G and H which apply to AM and FM broadcast services both commercial and noncommercial 73 402 Definitions a DAB Digital audio broadcast stations are those radio stations licensed by the Commission and use the In band On channel IBOC system for broadcasting purposes b In Band On Channel DAB System A technical system in which a station s digital signal is broadcast in the same spectrum and on the same channel as its analog signal c Hybrid DAB System A system which transmits both the digital and analog signals within the spectral emission mask of a single AM or FM channel d Extended hybrid operation An enhanced mode of FM IBOC DAB operation which includes additional DAB subcarriers transmitted between the analog FM signal and the inner edges of the primary DAB sidebands e Primary AM DAB Sidebands The two groups of hybrid AM IBOC DAB subcarriers which are transmitted 10 to 15 kHz above carrier frequency the upper primary DAB sideband and 10 to 15 kHz below carrier frequency the lower primary DAB sideband f Multicasting Subdividing the digital bitstream into multiple channels for additional audio programming uses g Datacasting Subdividing the digital bitstream into multiple channels for additional data or information services uses h All digital AM station An AM station broadcasting an IBOC waveform that consists solely of digitally modulated subcarriers and the unmodulated AM carrier 72 FR 45692 Aug 15 2007 as amended at 85 FR 78027 Dec 3 2020 47 CFR 73
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402 h enhanced display page 157 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 403 Radio Broadcast Services 73 403 Digital audio broadcasting service requirements a Broadcast radio stations using IBOC must transmit at least one over the air digital audio programming stream at no direct charge to listeners In addition a hybrid broadcast radio station must simulcast its analog audio programming on one of its digital audio programming streams The DAB audio programming stream that is provided pursuant to this paragraph a must be at least comparable in sound quality with a standard analog broadcast b Emergency information The emergency information requirements found in 73 1250 shall apply to all free DAB programming streams 72 FR 45692 Aug 15 2007 as amended at 85 FR 78027 Dec 3 2020 73 404 IBOC DAB operation a The licensee of an AM or FM station or the permittee of a new AM or FM station which has commenced program test operation pursuant to 73 1620 may commence hybrid IBOC DAB operation with digital facilities which conform to the technical specifications specified for hybrid DAB operation in the 2002 First Report and Order in MM Docket No 99 325 as revised in the Media Bureau s subsequent Order in MM Docket No 99 325 In addition the licensee of an AM station or the permittee of a new AM station that has commenced program test authority pursuant to 73 1620 may with reasonable notice to listeners commence all digital IBOC operation with digital facilities that conform to the requirements set out in the 2020 Report and Order in MB Docket No 19 311 and MB Docket No 13 249 An AM or FM station may transmit IBOC signals during all hours for which
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the station is licensed to broadcast b In situations where interference to other stations is anticipated or actually occurs hybrid AM licensees may upon notification to the Commission reduce the power of the primary DAB sidebands by up to 6 dB All digital AM licensees may upon notification to the Commission reduce the power of the secondary and tertiary sidebands by up to 6 dB even if doing so results in non compliance with 73 1560 a 1 Any greater reduction of sideband power requires prior authority from the Commission via the filing of a request for special temporary authority or an informal letter request for modification of license c Hybrid IBOC AM stations must use the same licensed main or auxiliary antenna to transmit the analog and digital signals d FM stations may transmit hybrid IBOC signals in combined mode i e using the same antenna for the analog and digital signals or may employ separate analog and digital antennas Where separate antennas are used the digital antenna 1 Must be a licensed auxiliary antenna of the station 2 Must be located within 3 seconds latitude and longitude from the analog antenna 3 Must have a radiation center height above average terrain between 70 and 100 percent of the height above average terrain of the analog antenna 72 FR 45692 Aug 15 2007 as amended at 75 FR 17877 Apr 8 2010 85 FR 18151 Apr 1 2020 85 FR 78027 Dec 3 2020 73 406 Notification a Hybrid AM and FM licensees must electronically file a digital notification to the Commission in Washington DC within 10 days of commencing IBOC digital operation 47 CFR 73 406 a enhanced display page 158 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73
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406 a 1 Radio Broadcast Services 1 All digital licensees must file a digital notification within 10 days of the following changes i Any reduction in nominal power of an all digital AM station ii A transition from enhanced to core only operating mode or iii A reversion from all digital to hybrid or analog operation 2 All digital licensees will not be permitted to commence operation sooner than 30 calendar days from public notice of digital notification of the following changes i The commencement of new all digital operation ii An increase in nominal power of an all digital AM station or iii A transition from core only to enhanced operating mode b Every digital notification must include the following information 1 The call sign and facility identification number of the station 2 If applicable the date on which the new or modified IBOC operation commenced or ceased 3 The name and telephone number of a technical representative the Commission can call in the event of interference 4 A certification that the operation will not cause human exposure to levels of radio frequency radiation in excess of the limits specified in 1 1310 of this chapter and is therefore categorically excluded from environmental processing pursuant to 1 1306 b of this chapter Any station that cannot certify compliance must submit an environmental assessment EA pursuant to 1 1311 of this chapter and may not commence IBOC operation until such EA is ruled upon by the Commission c Each AM digital notification must also include the following information 1 A certification that the IBOC DAB facilities conform to applicable nominal power limits and emissions mask limits 2 The nominal power of the station if separate analog and digital transmitters are used the nominal power for each transmitter 3 If applicable
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the amount of any reduction in an AM station s digital carriers 4 For all digital stations the type of notification all digital notification increase in nominal power reduction in nominal power transition from core only to enhanced transition from enhanced to core only reversion from all digital to hybrid or analog operation 5 For all digital stations if a notification of commencement of new all digital service or a nominal power change whether the station is operating in core only or enhanced mode and 6 For all digital stations a certification that the all digital station complies with all Emergency Alert System EAS requirements in part 11 of this chapter d Each FM digital notification must also include the following information 1 A certification that the IBOC DAB facilities conform to the HD Radio emissions mask limits 2 FM digital effective radiated power used and certification that the FM analog effective radiated power remains as authorized 47 CFR 73 406 d 2 enhanced display page 159 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 406 d 3 Radio Broadcast Services 3 If applicable the geographic coordinates elevation data and license file number of the auxiliary antenna employed by an FM station as a separate digital antenna and 4 If applicable for FM systems employing interleaved antenna bays a certification that adequate filtering and or isolation equipment has been installed to prevent spurious emissions in excess of the limits specified in 73 317 85 FR 78027 Dec 3 2020 Subpart D Noncommercial Educational FM Broadcast Stations Source 28 FR 13651 Dec 14 1963 unless otherwise noted Redesignated at 72 FR 45692 Aug 15 2007 47 CFR 73 406 d 4 enhanced display page 160 of 580 47 CFR Part 73 up
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to date as of 2 20 2024 47 CFR 73 501 Radio Broadcast Services 73 501 Channels available for assignment a The following frequencies except as provided in paragraph b of this section are available for noncommercial educational FM broadcasting Frequency MHz Channel No 1 87 9 200 88 1 201 88 3 202 88 5 203 88 7 204 88 9 205 2 89 1 206 89 3 207 89 5 208 89 7 209 89 9 210 90 1 211 90 3 212 90 5 213 90 7 214 90 9 215 91 1 216 91 3 217 91 5 218 91 7 219 91 9 220 1 The frequency 87 9 MHz Channel 200 is available only for use of existing Class D stations required to change frequency It is available only on a noninterference basis with respect to TV Channel 6 stations and adjacent channel noncommercial educational FM stations It is not available at all within 402 kilometers 250 miles of Canada and 320 kilometers 199 miles of Mexico The specific standards governing its use are contained in 73 512 2The frequency 89 1 MHz Channel 206 in the New York City metropolitan area is reserved for the use of the United Nations with the equivalent of an antenna height of 150 meters 492 feet above average terrain and effective radiated power of 20 kW and the Commission will make no assignments which would cause objectionable interference with such use b Reserved 43 FR 39715 Sept 6 1978 as amended at 47 FR 30068 July 12 1982 52 FR 43765 Nov 16 1987 58 FR 44950 Aug 25 1993 87 FR 15343 Mar 18 2022 47 CFR 73 501 b enhanced display page 161 of 580 47 CFR Part 73 up to date as of 2
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20 2024 47 CFR 73 503 Radio Broadcast Services 73 503 Licensing requirements and service The operation of and the service furnished by noncommercial educational FM broadcast stations shall be governed by the following a A noncommercial educational FM broadcast station will be licensed only to a nonprofit educational organization and upon showing that the station will be used for the advancement of an educational program 1 In determining the eligibility of publicly supported educational organizations the accreditation of their respective state departments of education shall be taken into consideration 2 In determining the eligibility of privately controlled educational organizations the accreditation of state departments of education and or recognized regional and national educational accrediting organizations shall be taken into consideration b Each station may transmit programs directed to specific schools in a system or systems for use in connection with the regular courses as well as routine and administrative material pertaining thereto and may transmit educational cultural and entertainment programs to the public c A noncommercial educational FM broadcast station may broadcast programs produced by or at the expense of or furnished by persons other than the licensee if no other consideration than the furnishing of the program and the costs incidental to its production and broadcast are received by the licensee The payment of line charges by another station network or someone other than the licensee of a noncommercial educational FM broadcast station or general contributions to the operating costs of a station shall not be considered as being prohibited by this paragraph d Each station shall furnish a nonprofit and noncommercial broadcast service Noncommercial educational FM broadcast stations are subject to the provisions of 73 1212 to the extent they are applicable to the broadcast of programs produced by or at the expense of or furnished by
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others No promotional announcement on behalf of for profit entities shall be broadcast at any time in exchange for the receipt in whole or in part of consideration to the licensee its principals or employees However acknowledgements of contributions can be made The scheduling of any announcements and acknowledgements may not interrupt regular programming except as permitted under paragraph e of this section e A noncommercial educational FM broadcast station may interrupt regular programming to conduct fundraising activities on behalf of a third party non profit organization provided that all such fundraising activities conducted during any given year do not exceed one percent of the station s total annual airtime A station may use the prior year s total airtime for purposes of determining how many hours constitute one percent of its total annual airtime With respect to stations that multicast programming on two or more separate channels the one percent annual limit will apply separately to each individual programming stream For purposes of this paragraph a non profit organization is an entity that qualifies as a non profit organization under 26 U S C 501 c 3 1 Audience disclosure A noncommercial educational FM broadcast station that interrupts regular programming to conduct fundraising activities on behalf of a third party non profit organization must air a disclosure during such activities clearly stating that the fundraiser is not for the benefit of the station itself and identifying the entity for which it is fundraising The station must air the audience disclosure at the beginning and the end of each fundraising program and at least once during each hour in which the program is on the air 47 CFR 73 503 e 1 enhanced display page 162 of 580 47 CFR Part 73 up to date as of 2 20 2024
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47 CFR 73 503 e 2 Radio Broadcast Services 2 Reimbursement A noncommercial educational FM broadcast station that interrupts regular programming to conduct fundraising activities on behalf of a third party non profit organization may accept reimbursement of expenses incurred in conducting third party fundraising activities or airing third party fundraising programs 3 Exemption No noncommercial educational FM broadcast station that receives funding from the Corporation for Public Broadcasting shall have the authority to interrupt regular programming to conduct fundraising activities on behalf of a third party non profit organization f Mutually exclusive applications for noncommercial educational radio stations operating on reserved channels will be resolved pursuant to the point system in subpart K g Application limit An applicant may file no more than a total of 10 applications in the 2021 NCE FM filing window A party to an application filed in the 2021 NCE FM filing window may hold attributable interests as defined in 73 7000 in no more than a total of 10 applications filed in the window If it is determined that any party to an application has an attributable interest in more than 10 applications the Media Bureau will retain the 10 applications that were filed first based on the date of application receipt and dismiss all other applications Note to 73 503 Commission interpretation on this rule including the acceptable form of acknowledgements may be found in the Second Report and Order in Docket No 21136 Commission Policy Concerning the Noncommercial Nature of Educational Broadcast Stations 86 FCC 2d 141 1981 the Memorandum Opinion and Order in Docket No 21136 90 FCC 2d 895 1982 the Memorandum Opinion and Order in Docket 21136 97 FCC 2d 255 1984 and the Report and Order in Docket No 12 106 Noncommercial Educational Station Fundraising for Third
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Party Non Profit Organizations FCC 17 41 April 20 2017 See also Commission Policy Concerning the Noncommercial Nature of Educational Broadcast Stations Public Notice 7 FCC Rcd 827 1992 which can be retrieved through the Internet at http www fcc gov mmb asd nature html Secs 4 5 303 48 Stat as amended 1066 1068 1082 47 U S C 154 155 303 28 FR 13651 Dec 14 1963 as amended at 35 FR 7558 May 15 1970 47 FR 36178 Aug 19 1982 49 FR 29069 July 18 1984 63 FR 33877 June 22 1998 65 FR 36378 June 8 2000 82 FR 21135 May 5 2017 86 FR 26838 May 5 2021 73 504 Channel assignments in the Mexican border area a NCE FM stations within 199 miles 320 km of the United States Mexican border shall comply with the separation requirements and other provisions of the Agreement between the United States of America and the United Mexican States Concerning Frequency Modulation Broadcasting in the 88 to 108 MHz Band as amended b Applicants for noncommercial educational FM stations within 199 miles 320 km of the United States Mexican border shall propose at least Class A minimum facilities see 73 211 a However existing Class D noncommercial educational stations may apply to change frequency within the educational portion of the FM band in accordance with the requirements set forth in 73 512 47 CFR 73 504 b enhanced display page 163 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 504 c Radio Broadcast Services c Section 73 208 of this chapter shall be complied with as to the determination of reference points and distance computations used in applications for new or changed facilities However if it is necessary to
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consider a Mexican channel assignment or authorization the computation of distance will be determined as follows if a transmitter site has been established on the basis of the coordinates of the site if a transmitter site has not been established on the basis of the reference coordinates of the community town or city 52 FR 43765 Nov 16 1987 73 505 Zones For the purpose of assignment of noncommercial educational FM stations the United States is divided into three zones Zone I Zone I A and Zone II having the boundaries specified in 73 205 42 FR 36828 July 18 1977 73 506 Classes of noncommercial educational FM stations and channels a Noncommercial educational stations operating on the channels specified in 73 501 are divided into the following classes 1 A Class D educational station is one operating with no more than 10 watts transmitter power output 2 A Class D educational secondary station is one operating with no more than 10 watts transmitter power output in accordance with the terms of 73 512 or which has elected to follow these requirements before they become applicable under the terms of 73 512 3 Noncommercial educational FM NCE FM stations with more than 10 watts transmitter power output are classified as Class A B1 B C3 C2 C1 or C depending on the station s effective radiated power and antenna height above average terrain and on the zone in which the station s transmitter is located on the same basis as set forth in 73 210 and 73 211 for commercial stations b Any noncommercial educational station except Class D may be assigned to any of the channels listed in 73 501 Class D noncommercial educational FM stations applied for or authorized prior to June 1 1980 may continue to operate
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on their authorized channels subject to the provisions of 73 512 43 FR 39715 Sept 6 1978 as amended at 49 FR 10264 Mar 20 1984 52 FR 47569 Dec 15 1987 54 FR 16367 Apr 24 1989 54 FR 19374 May 5 1989 73 507 Minimum distance separations between stations a Minimum distance separations No application for a new station or change in channel or transmitter site or increase in facilities of an existing station will be granted unless the proposed facilities will be located so as to meet the adjacent channel distance separations specified in 73 207 a for the class of station involved with respect to assignment on Channels 221 222 and 223 listed in 73 201 except where in the case of an existing station the proposed facilities fall within the provisions of 73 207 b or where a Class D station is changing frequency to comply with the requirements of 73 512 b Stations authorized as of September 10 1962 which do not meet the requirements of paragraph a of this section and 73 511 may continue to operate as authorized but any application to change facilities will be subject to the provisions of this section 47 CFR 73 507 b enhanced display page 164 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 507 c Radio Broadcast Services c 1 Stations separated in frequency by 10 6 or 10 8 MHz 53 or 54 channels from allotments or assignments on non reserved channels will not be authorized unless they conform to the separations given in Table 1 to paragraph b of 73 207 2 Under the United States Mexican FM Broadcasting Agreement for stations and assignments differing in frequency by 10 6 to 10 8 MHz
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53 or 54 channels U S noncommercial educational FM allotments and assignments must meet the separations given in Table 3 to paragraph b of 73 207 to Mexican allotments or assignments in the border area 42 FR 36828 July 18 1977 as amended at 43 FR 39716 Sept 6 1978 44 FR 65764 Nov 15 1979 49 FR 10264 Mar 20 1984 49 FR 19670 May 9 1984 87 FR 15343 Mar 18 2022 73 508 Standards of good engineering practice a All noncommercial educational stations and LPFM stations operating with more than 10 watts transmitter power output shall be subject to all of the provisions of the FM Technical Standards contained in subpart B of this part Class D educational stations and LPFM stations operating with 10 watts or less transmitter output power shall be subject to the definitions contained in 73 310 and also to those other provisions of the FM Technical Standards which are specifically made applicable to them by the provisions of this subpart b The transmitter and associated transmitting equipment of each noncommercial educational FM station and LPFM station licensed for transmitter power output above 10 watts must be designed constructed and operated in accordance with 73 317 c The transmitter and associated transmitting equipment of each noncommercial educational FM station licensed for transmitter power output of 10 watts or less although not required to meet all requirements of 73 317 must be constructed with the safety provisions of the current national electrical code as approved by the American National Standards Institute These stations must be operated tuned and adjusted so that emissions are not radiated outside the authorized band causing or which are capable of causing interference to the communications of other stations The audio distortion audio frequency range carrier hum noise level and
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other essential phases of the operation which control the external effects must be at all times capable of providing satisfactory broadcast service Studio equipment properly covered by an underwriter s certificate will be considered as satisfying safety requirements 65 FR 7640 Feb 15 2000 73 509 Prohibited overlap a An application for a new or modified NCE FM station other than a Class D secondary station will not be accepted if the proposed operation would involve overlap of signal strength contours with any other station licensed by the Commission and operating in the reserved band Channels 200 220 inclusive as set forth in Table 1 to this paragraph a Table 1 to Paragraph a Frequency separation Contour of proposed station Contour of other station Co channel 0 1mV m 40 dBu 1 mV m 60 dBu 47 CFR 73 509 a enhanced display page 165 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 509 b Radio Broadcast Services Frequency separation Contour of proposed station Contour of other station 1 mV m 60 dBu 0 1 mV m 40 dBu 200 kHz 0 5 mV m 54 dBu 1 mV m 60 dBu 1 mV m 60 dBu 1 0 5 mV m 54 dBu 400 kHz 600 kHz 100 mV m 100 dBu 1 mV m 60 dBu 1 mV m 60 dBu 100 mV m 100 dBu b An application by a Class D secondary station other than an application to change class will not be accepted if the proposed operation would involve overlap of signal strength contours with any other station as set forth in Table 2 to this paragraph b Table 2 to Paragraph b Contour of Contour of Frequency separation proposed station any other station Co channel
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0 1 mV m 40 dBu 1 mV m 60 dBu 200 kHz 0 5 mV m 54 dBu 1 mV m 60 dBu 400 600 kHz 100 mV m 100 dBu 1 mV m 60 dBu c The following standards must be used to compute the distances to the pertinent contours 1 The distance of the 60 dBu 1 mV m contours are to be computed using Figure 1 of 73 333 F 50 50 curves of this part 2 The distance to the other contours are to be computed using Figure 1a of 73 333 F 50 10 curves In the event that the distance to the contour is below 16 kilometers approximately 10 miles and therefore not covered by Figure 1a curves in Figure 1 must be used 3 The effective radiated power ERP that is the maximum ERP for any elevation plane on any bearing will be used d An application for a change other than a change in channel in the facilities of a NCE FM broadcast station will be accepted even though overlap of signal strength contours as specified in paragraphs a and b of this section would occur with another station in an area where such overlap does not already exists if 1 The total area of overlap with that station would not be increased 2 The area of overlap with any other station would not increase 3 The area of overlap does not move significantly closer to the station receiving the overlap and 4 No area of overlap would be created with any station with which the overlap does not now exist e The provisions of this section concerning prohibited overlap will not apply where the area of such overlap lies entirely over water 50 FR 27962 July 9 1985 as amended
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at 52 FR 43765 Nov 16 1987 65 FR 79778 Dec 20 2000 87 FR 15343 Mar 18 2022 47 CFR 73 509 e enhanced display page 166 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 510 Radio Broadcast Services 73 510 Antenna systems a All noncommercial educational stations operating with more than 10 watts transmitter output power shall be subject to the provisions of 73 316 concerning antenna systems contained in subpart B of this part b Directional antenna No application for a construction permit of a new station or change in channel or change in an existing facility on the same channel will be accepted for filing if a directional antenna with a maximum to minimum ratio of more than 15 dB is proposed 42 FR 36829 July 18 1977 73 511 Power and antenna height requirements a No new noncommercial educational station will be authorized with less power than minimum power requirements for commercial Class A facilities See 73 211 b No new noncommercial educational FM station will be authorized with facilities greater than Class B in Zones I and I A or Class C in Zone II as defined in 73 211 c Stations licensed before December 31 1984 and operating above 50 kW in Zones I and I A and above 100 kW and in Zone II may continue to operate as authorized 50 FR 27963 July 9 1985 as amended at 50 FR 31379 Aug 2 1985 54 FR 3602 Jan 25 1989 73 512 Special procedures applicable to Class D noncommercial educational stations a All Class D stations seeking renewal of license for any term expiring June 1 1980 or thereafter shall comply with the requirements set forth below and shall simultaneously file an
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application on FCC Form 340 containing full information regarding such compliance with the provisions set forth below 1 To the extent possible each applicant shall select a commercial FM channel on which it proposes to operate in lieu of the station s present channel The station may select any commercial channel provided no objectionable interference as set forth in 73 509 b would be caused The application shall include the same engineering information as is required to change the frequency of an existing station and any other information necessary to establish the fact that objectionable interference would not result If no commercial channel is available where the station could operate without causing such interference the application shall set forth the basis upon which this conclusion was reached 2 If a commercial channel is unavailable to the extent possible each applicant should propose operation on Channel 200 87 9 MHz unless the station would be within 402 kilometers 250 miles of the Canadian border or 320 kilometers 199 miles of the Mexican border or would cause interference to an FM station operating on Channels 201 202 or 203 or to TV Channel 6 as provided in 73 509 3 If a channel is not available under either paragraph a 1 or 2 of this section the renewal applicant shall study all 20 noncommercial educational FM channels and shall propose operation on the channel which would cause the least preclusion to the establishment of new stations or increases in power by existing stations Full information regarding the basis for the selection should be provided 47 CFR 73 512 a 3 enhanced display page 167 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 512 b Radio Broadcast Services b At any time before the
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requirements of paragraph a become effective any existing Class D station may file a construction permit application on FCC Form 340 to change channel in the manner described above which shall be subject to the same requirements In either case any license granted shall specify that the station s license is for a Class D secondary station c Except in Alaska no new Class D applications nor major change applications by existing Class D stations are acceptable for filing except by existing Class D stations seeking to change frequency Upon the grant of such application the station shall become a Class D secondary station d Class D noncommercial educational secondary stations see 73 506 a 2 will be permitted to continue to operate only so long as no interference as defined in 73 509 is caused to any TV or commercial FM broadcast stations In the event that the Class D secondary station would cause interference to a TV or commercial FM broadcast station after that Class D secondary station is authorized the Class D secondary station must cease operation when program tests for the TV or commercial FM broadcast station commence The Class D secondary station may apply for a construction permit see 73 3533 to change to another frequency or antenna site where it would not cause interference as defined in 73 509 If the Class D secondary station must cease operation before the construction permit is granted an application for temporary authorization pursuant to 73 3542 to operate with the proposed facilities may be submitted where appropriate such temporary authorization can be granted With respect to Class D secondary applications on Channels 201 through 220 required to protect television stations operating on TV Channel 6 the non interference requirements in the preceding sentences will apply unless the
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application is accompanied by a written agreement between the Class D secondary applicant and each affected TV Channel 6 broadcast station concurring with the proposed Class D facilities 43 FR 39716 Sept 6 1978 as amended at 44 FR 48226 Aug 17 1979 47 FR 28388 June 30 1982 50 FR 8326 Mar 1 1985 85 FR 35573 June 11 2020 73 513 Noncommercial educational FM stations operating on unreserved channels a Noncommercial educational FM stations other than Class D secondary which operate on Channels 221 through 300 but which comply with 73 503 as to licensing requirements and the nature of the service rendered must comply with the provisions of the following sections of subpart B 73 201 through 73 213 Classification of FM Broadcast Stations and Allocations of Frequencies and such other sections of subpart B as are made specially applicable by the provisions of this subpart C Stations in Alaska authorized before August 11 1982 using Channels 261 300 need not meet the minimum effective radiated power requirement specified in 73 211 a In all other respects stations operating on Channels 221 through 300 are to be governed by the provisions of this subpart and not subpart B b When a noncommercial educational applicant is among mutually exclusive applications for an unreserved FM channel the mutually exclusive applications will be considered pursuant to Subpart I Competitive Bidding Procedures and not Subpart K Application and Selection Procedures On Reserved Noncommercial Educational Channels 47 FR 30068 July 12 1982 as amended at 65 FR 36378 June 8 2000 47 CFR 73 513 b enhanced display page 168 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 514 Radio Broadcast Services 73 514 Protection from interference Permittees and licensees of NCE FM
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stations are not protected from interference which may be caused by the grant of a new LPFM station or of authority to modify an existing LPFM station except as provided in subpart G of this part 65 FR 67299 Nov 9 2000 73 515 NCE FM transmitter location The transmitter location shall be chosen so that on the basis of effective radiated power and antenna height above average terrain employed a minimum field strength of l mV m 60 dBu will be provided over at least 50 percent of its community of license or reach 50 percent of the population within the community 65 FR 79779 Dec 20 2000 73 525 TV Channel 6 protection The provisions of this section apply to all applications for construction permits for new or modified facilities for a NCE FM station on Channels 200 220 unless the application is accompanied by a written agreement between the NCE FM applicant and each affected TV Channel 6 broadcast station concurring with the proposed NCE FM facilities a Affected TV Channel 6 station 1 An affected TV Channel 6 station is a TV broadcast station which is authorized to operate on Channel 6 that is located within the following distances of a NCE FM station operating on Channels 201 220 Table A NCE FM channel Distance kilometers NCE FM channel Distance kilometers 201 265 211 196 202 257 212 195 203 246 213 193 204 235 214 187 205 225 215 180 206 211 216 177 207 196 217 174 208 196 218 166 209 196 219 159 210 196 220 154 2 Where a NCE FM application has been accepted for filing or granted the subsequent acceptance of an application filed by a relevant TV Channel 6 station will not require revision of the pending NCE
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FM application or the FM station s authorized facilities unless the provisions of paragraph e 3 of this section for TV translator or satellite stations apply 47 CFR 73 525 a 2 enhanced display page 169 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 525 b Radio Broadcast Services b Existing NCE FM stations 1 A NCE FM station license authorized to operate on channels 201 220 as of December 31 1984 or a permittee granted a construction permit for a NCE FM station as of December 31 1984 are not subject to this section unless they propose either i To make changes in operating facilities or location which will increase predicted interference as calculated under paragraph e of this section to TV Channel 6 reception in any direction or ii To increase its ratio of vertically polarized to horizontally polarized transmissions 2 Applicants must comply with the provision of paragraphs c or d of this section unless the application for modification demonstrates that for each person predicted to receive new interference as a result of the change existing predicted interference to two person will be eliminated Persons predicted to receive new interference are those located outside the area predicted to receive interference from the station s currently authorized facilities existing predicted interference area but within the area predicted to receive interference from the proposed facilities proposed predicted interference area Persons for whom predicted interference will be eliminated are those located within the existing predicted interference area and outside the proposed predicted interference area i In making this calculation the provisions contained at paragraph e will be used except as modified by paragraph b 3 of this section ii The following adjustment to the population calculation may be made up to
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1 000 persons may be subtracted from the population predicted to receive new interference if for each person substracted the applicant effectively installs two filters within 90 days after commencing program tests with the proposed facilities and no later than 45 days thereafter provides the affected TV Channel 6 station as defined in paragraph a of this section with a certification containing sufficient information to permit verification of such installation The required number of filters will be installed on television receivers located within the predicted interference area provided that half of the installations are within the area predicted to receive new interference 3 Where an NCE FM applicant wishes to operate with facilities in excess of that permitted under the provisions of paragraphs c or d of this section by proposing to use vertically polarized transmissions only or to increase its ratio of vertically to horizontally polarized transmissions the affected TV Channel 6 station must be given an option to pay for the required antenna and if it takes that option the NCE FM vertically polarized component of power will be one half 3 dB that which would be allowed by the provisions of paragraph e 4 of this section 4 Applications for modification will include a certification that the applicant has given early written notice of the proposed modification to all affected TV Channel 6 stations as defined in paragraph a of this section 5 Where the NCE FM station demonstrates in its application that it must make an involuntary modification e g due to loss of its transmitter site that would not otherwise be permitted under this section its application will be considered on a case by case basis In such cases the provisions of paragraph b 3 of this section do not apply c New NCE FM
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stations Except as provided for by paragraph d of this section applicants for NCE FM stations proposing to operate on Channels 201 220 must submit a showing indicating that the predicted interference area resulting from the proposed facility contains no more than 3 000 persons 47 CFR 73 525 c enhanced display page 170 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 525 c 1 Radio Broadcast Services 1 In making these calculations the provisions in paragraph e of this section will be used 2 The following adjustment to population may be made up to 1 000 persons may be subtracted from the population within the predicted interference area if for each person subtracted the applicant effectively installs one filter within 90 days after commencing program tests and no later than 45 days thereafter provides the affected TV Channel 6 station with a certification containing sufficient information to permit verification of such installation The required number of filters will be installed on television receivers located within the predicted interference area d Collocated stations As an alternative to the provisions contained in paragraphs b and c of this section an application for a NCE FM station operating on Channels 201 220 and located at 0 4 kilometer approximately 0 25 mile or less from a TV Channel 6 station will be accepted under the following requirements 1 The effective radiated power cannot exceed the following values Table B NCE FM channel Power kilowatt NCE FM channel Power kilowatt 201 1 1 211 26 3 202 1 9 212 31 6 203 3 1 213 38 0 204 5 0 214 46 8 205 8 3 215 56 2 206 10 0 216 67 6 207 12 0 217 83 2 208 14
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8 218 100 0 209 17 8 219 100 0 210 21 4 220 100 0 2 The NCE FM application will include a certification that the applicant has coordinated its antenna with the affected TV station by employing either The same number of antenna bays with radiation centers separated by no more than 30 meters approximately 100 feet verticially or the FM vertical pattern not exceeding the TV vertical pattern by more than 2dB e Calculation of predicted interference area and population Predictions of interference required under this section and calculations to determine the number of persons within a predicted interference area for NCE FM operation on Channels 201 220 are made as follows 1 The predicted interference area will be calculated as follows i The distances to the TV Channel 6 field strength contours will be predicted according to the procedures specified in 73 684 Prediction of coverage using the F 50 50 curves in Figure 9 73 699 47 CFR 73 525 e 1 i enhanced display page 171 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 525 e 1 ii Radio Broadcast Services ii For each TV Channel 6 field strength contour there will be an associated F 50 10 FM interference contour the value of which in units of dBu is defined as the sum of the TV Channel 6 field strength in dBu and the appropriate undesired to desired U D signal ratio in dB obtained from Figures 1 and 2 73 599 corresponding to the channel of the NCE FM applicant and the appropriate F 50 50 field strength contour of the TV Channel 6 station iii An adjustment of 6 dB for television receiving antenna directivity will be added to each NCE FM
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interference contour at all points outside the Grade A field strength contour 73 683 of the TV Channel 6 station and within an arc defined by the range of angles of which the FM transmitter site is the vertex from 110 relative to the azimuth from the FM transmitter site to the TV Channel 6 transmitter site counterclockwise to 250 relative to that azimuth At all points at and within the Grade A field strength contour of the TV Channel 6 station the 6 dB adjustment is applicable over the range of angles from 70 clockwise to 110 and from 250 clockwise to 290 iv The distances to the applicable NCE FM interference contours will be predicted according to the procedures specified in 73 313 Prediction of Coverage using the proposed antenna height and horizontally polarized or the horizontal equivalent of the vertically polarized effective radiated power in the pertinent direction and the F 50 10 field strength curves Figure 1a 73 333 v The predicted interference area will be defined as the area within the TV Channel 6 station s 47 dBu field strength contour that is bounded by the locus of intersections of a series of TV Channel 6 field strength contours and the applicable NCE FM interference contours vi In cases where the terrain in one or more directions departs widely from the surrounding terrain average for example an intervening mountain a supplemental showing may be made Such supplemental showings must describe the procedure used and should include sample calculations The application must also include maps indicating the predicted interference area for both the regular method and the supplemental method vii In cases where the predicted interference area to Channel 6 television from a noncommercial educational FM station will be located within the 90 dBu F 50
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50 contour of the television Channel 6 station the location of the FM interfering contour must be determined using the assumption that the Channel 6 field strength remains constant at 90 dBu everywhere within the 90 dBu TV contour The FM to Channel 6 U D signal strength ratio specified in 73 599 corresponding to the Channel 6 TV field strength of 90 dBu shall be used 2 The number of persons contained within the predicted interference area will be based on data contained in the most recently published U S Census of Population and will be determined by plotting the predicted interference area on a County Subdivision Map of the state published for the Census and totalling the number of persons in each County Subdivision such as Minor Civil Division MCD Census County Division CCD or equivalent areas contained within the predicted interference area Where only a portion of County Subdivision is contained within the interference area i The population of all incorporated places or Census designated places will be subtracted from the County Subdivision population 47 CFR 73 525 e 2 i enhanced display page 172 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 525 e 2 ii Radio Broadcast Services ii Uniform distribution of the remaining population over the remaining area of the County Subdivision will be assumed in determining the number of persons within the predicted interference area in proportion to the share of the remaining area of the County Subdivision that lies within the predicted interference area and iii The population of the incorporated places or Census designated places contained within the predicted interference area will then be added to the total again assuming uniform distribution of the population within the area of each place and
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adding a share of the population proportional to the share of the area if only a portion of such a place is within the predicted interference area iv At the option of either the NCE FM applicant or an affected TV Channel 6 station which provides the appropriate analysis more detailed population data may be used 3 Adjustments to the population calculated pursuant to paragraph e 2 of this section may be made as follows i If any part of the predicted interference area is within the Grade A field strength contour 73 683 of a TV translator station carrying the affected TV Channel 6 station the number of persons within that overlap area will be subtracted provided the NCE FM construction permit and license will contain the following conditions A When the TV translator station ceases to carry the affected TV Channel 6 station s service and the cessation is not the choice of the affected TV Channel 6 station the NCE FM station will modify its facilities within a reasonable transition period to meet the requirements of this section which would have applied if no adjustment to population for translator service had been made in its application B The transition period may not exceed 1 year from the date the NCE FM station is notified by the TV Channel 6 station that the translator station will cease to carry the affected TV Channel 6 station s service or 6 months after the translator station ceases to carry the affected TV Channel 6 station s service whichever is earlier ii If any part of the interference area is within the Grade B field strength contour 73 683 of a satellite station of the affected TV Channel 6 station the number of persons within the overlap area will be subtracted
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provided the NCE FM permit and license will contain the following conditions A If the satellite station ceases to carry the affected TV Channel 6 station s service and the cessation is not the choice of the affected TV Channel 6 station the NCE FM station will modify its facilities within a reasonable transition period to meet the requirements of this rule which would have applied if no adjustment to population for satellite station service had been made in its application B The transition period may not exceed 1 year from the date the NCE FM station is notified by the TV Channel 6 station that the satellite station will cease to carry the affected TV Channel 6 stations s service or 6 months after the satellite station ceases to carry the affected TV Channel 6 station s service whichever is earlier iii If any part of the predicted interference area is located outside the affected TV Channel 6 station s Area of Dominant Influence ADI outside the Grade A field strength contour 73 683 and within the predicted city grade field strength contour 73 685 a of a TV broadcast 47 CFR 73 525 e 3 iii enhanced display page 173 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 525 e 3 iv Radio Broadcast Services station whose only network affiliation is the same as the only network affiliation of the affected TV Channel 6 station the number of persons within that part will be subtracted For purposes of this provision a network is defined as ABC CBS NBC or their successors In addition the ADI of an affected TV Channel 6 station and the program network affiliations of all relevant TV broadcast stations will be assumed to be as
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they were on the filing date of the NCE FM application or June 1 1985 whichever is later iv In calculating the population within the predicted interference area an exception will be permitted upon a showing e g as survey of actual television reception that the number of persons within the predicted interference area should be reduced to account for persons actually experiencing co channel or adjacent channel interference to reception of the affected TV Channel 6 station The area within which such a showing may be made will be limited to the area calculated as follows A The distances to the field strength contours of the affected TV Channel 6 station will be predicted according to the procedures specified in 73 684 Prediction of coverage using the F 50 50 curves in Figure 9 73 699 B For each field strength contour of the affected TV Channel 6 station there will be an associated co channel or adjacent channel TV broadcast station interference contour the value of which in units of dBu is defined as the sum of the affected TV Channel 6 station s field strength in dBu and the appropriate undesired to desired signal ratio in dB as follows Co channel normal offset 22 dB Co channel no offset 39 dB Adjacent channel 12 dB C The distances to the associated co channel or adjacent channel TV broadcast station interference contour will be predicted according to the procedures specified in 73 684 Prediction of coverage using the F 50 10 curves in Figure 9a 73 699 D The area within which the showing of actual interference may be made will be the area bounded by the locus of intersections of a series of the affected TV Channel 6 station s field strength contours and the associated interference
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contours of the co channel or adjacent channel TV broadcast station 4 The maximum permissible effective radiated power ERP and antenna height may be adjusted for vertical polarity as follows i If the applicant chooses to use vertically polarized transmissions only the maximum permissible vertically polarized ERP will be the maximum horizontally polarized ERP permissible at the same proposed antenna height calculated without the adjustment for television receiving antenna directivity specified in paragraph e 1 iii of this section multiplied by either 40 if the predicted interference area lies entirely outside the limits of a city of 50 000 persons or more or 10 if it does not ii If the applicant chooses to use mixed polarity the permissible ERP is as follows H V A is no greater than P 47 CFR 73 525 e 4 ii enhanced display page 174 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 525 f Radio Broadcast Services Where H is the horizontally polarized ERP in kilowatts for mixed polarity V is the vertically polarized ERP in kilowatts for mixed polarity A is 40 if the predicted interference area lies entirely outside the limits of a city of 50 000 persons or more or 10 if it does not and P is the maximum permitted horizontally polarized only power in kilowatts f Channel 200 Applications No application for use of NCE FM Channel 200 will be accepted if the requested facility would cause objectionable interference to TV Channel 6 operations Such objectionable interference will be considered to exist whenever the 15 dBu contour based on the F 50 10 curves in 73 333 Figure 1a would overlap the 40 dBu contour based on the F 50 50 curves in 73 699 Figure 9 50
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FR 27963 July 9 1985 50 FR 30187 July 24 1985 50 FR 31379 Aug 2 1985 as amended at 51 FR 26250 July 22 1986 52 FR 25867 July 9 1987 62 FR 51059 Sept 30 1997 73 558 Indicating instruments The requirements for indicating instruments described in 73 258 are applicable to all educational FM broadcast stations licensed with a transmitter power greater than 0 01 kw 51 FR 17029 May 8 1986 73 561 Operating schedule time sharing a All noncommercial educational FM stations will be licensed for unlimited time operation except those stations operating under a time sharing arrangement All noncommercial educational FM stations are required to operate at least 36 hours per week consisting of at least 5 hours of operation per day on at least 6 days of the week however stations licensed to educational institutions are not required to operate on Saturday or Sunday or to observe the minimum operating requirements during those days designated on the official school calendar as vacation or recess periods b All stations including those meeting the requirements of paragraph a of this section but which do not operate 12 hours per day each day of the year will be required to share use of the frequency upon the grant of an appropriate application proposing such share time arrangement Such applications shall set forth the intent to share time and shall be filed in the same manner as are applications for new stations They may be filed at any time but in cases where the parties are unable to agree on time sharing action on the application will be taken only in connection with the renewal of application for the existing station In order to be considered for this purpose such an application to share time must be
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filed no later than the deadline for filing petitions to deny the renewal application of the existing licensee or in the case of renewal applications filed by the existing licensee on or before May 1 1995 no later than the deadline for filing applications in conflict with the such renewal applications 1 The licensee and the prospective licensee s shall endeavor to reach an agreement for a definite schedule of periods of time to be used by each Such agreement shall be in writing and shall set forth which licensee is to operate on each of the hours of the day throughout the year Such 47 CFR 73 561 b 1 enhanced display page 175 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 561 b 2 Radio Broadcast Services agreement shall not include simultaneous operation of the stations Each licensee shall file the same in triplicate with each application to the Commission for initial construction permit or renewal of license Such written agreements shall become part of the terms of each station s license 2 The Commission desires to facilitate the reaching of agreements on time sharing However if the licensees of stations authorized to share time are unable to agree on a division of time the Commission shall be so notified by statement to that effect filed with the application proposing time sharing Thereafter the Commission will designate the application for hearing on any qualification issues arising regarding the renewal or new applicants If no such issues pertain the Commission will set the matter for expedited hearing limited solely to the issue of the sharing of time In the event the stations have been operating under a time sharing agreement but cannot agree on its continuation a hearing will be
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held and pending such hearing the operating schedule previously adhered to shall remain in full force and effect c A departure from the regular schedule set forth in a time sharing agreement will be permitted only in cases where a written agreement to that effect is reduced to writing is signed by the licensees of the stations affected thereby and is filed in triplicate by each licensee with the Commission Attention Audio Division Media Bureau prior to the time of the proposed change If time is of the essence the actual departure in operating schedule may precede the actual filing of the written agreement provided that appropriate notice is sent to the Commission in Washington DC Attention Audio Division Media Bureau d In the event that causes beyond the control of a permittee or licensee make it impossible to adhere to the operating schedule in paragraph a or b of this section or to continue operating the station may limit or discontinue operation for a period not exceeding 30 days without further authority from the Commission provided that notification is sent to the Commission in Washington DC Attention Audio Division Media Bureau no later than the 10th day of limited or discontinued operation During such period the permittee shall continue to adhere to the requirements of the station license pertaining to the lighting of antenna structures In the event normal operation is restored prior to the expiration of the 30 day period the permittee or licensee will notify the FCC Attention Audio Division of the date that normal operations resumed If causes beyond the control of the permittee or licensee make it impossible to comply within the allowed period Special Temporary Authority see 73 1635 must be requested to remain silent for such additional time as deemed necessary The license
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of a broadcasting station that fails to transmit broadcast signals for any consecutive 12 month period expires as a matter of law at the end of that period notwithstanding any provision term or condition of license to the contrary Note 1 to 73 561 For allocations purposes both all stations sharing time will be treated as unlimited time stations Note 2 to 73 561 See 73 1705 73 1715 and 73 1740 Secs 4 5 303 48 Stat as amended 1066 1068 1082 47 U S C 154 155 303 43 FR 39717 Sept 6 1978 as amended at 43 FR 45845 Oct 4 1978 44 FR 3416 Jan 19 1979 44 FR 65764 Nov 15 1979 47 FR 54448 Dec 3 1982 50 FR 13974 Apr 9 1985 61 FR 18291 Apr 25 1996 61 FR 28767 June 6 1996 63 FR 33877 June 22 1998 67 FR 13231 Mar 21 2002 47 CFR 73 561 d enhanced display page 176 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 567 Radio Broadcast Services 73 567 Determining operating power The procedures for determining operating power described in 73 267 are applicable to noncommercial education FM stations 44 FR 58732 Oct 11 1979 73 593 Subsidiary communications services The licensee of a noncommercial educational FM station is not required to use its subcarrier capacity but if it chooses to do so it is governed by 73 293 through 73 295 of the Commission s Rules regarding the types of permissible subcarrier uses and the manner in which subcarrier operations shall be conducted Provided however that remunerative use of a station s subcarrier capacity shall not be detrimental to the provision of existing or potential radio reading services for the blind or otherwise
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inconsistent with its public broadcasting responsibilities 48 FR 26615 June 9 1983 73 597 FM stereophonic sound broadcasting A noncommercial educational FM broadcast station may without specific authority from the FCC transmit stereophonic sound programs upon installation of stereophonic sound transmitting equipment under the provisions of 2 977 2 1001 73 322 and 73 1590 of the FCC s Rules 51 FR 17029 May 8 1986 73 599 NCE FM engineering charts This section consists of the following Figures 1 and 2 47 CFR 73 599 enhanced display page 177 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 599 Radio Broadcast Services 47 CFR 73 599 enhanced display page 178 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 599 Radio Broadcast Services 47 CFR 73 599 enhanced display page 179 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 601 Radio Broadcast Services 50 FR 27965 July 9 1985 Subpart E Television Broadcast Stations 73 601 Scope of subpart This subpart contains the rules and regulations including engineering standards governing TV broadcast stations including noncommercial educational TV broadcast stations and where indicated low power TV and TV translator stations in the United States its Territories and possessions TV broadcast low power TV and TV translator stations are assigned channels 6 MHz wide designated as set forth in 73 603 a 47 FR 21494 May 18 1982 73 602 Cross reference to rules in other parts See 73 1010 43 FR 32781 July 28 1978 73 603 Numerical designation of television channels a Channel No Frequency band MHz 2 54 60 3 60 66 4 66 72 5 76 82 6 82 88 7 174
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180 8 180 186 9 186 192 10 192 198 11 198 204 12 204 210 13 210 216 14 470 476 15 476 482 16 482 488 17 488 494 18 494 500 19 500 506 20 506 512 21 512 518 22 518 524 47 CFR 73 603 a enhanced display page 180 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 603 b Radio Broadcast Services Channel No Frequency band MHz 23 524 530 24 530 536 25 536 542 26 542 548 27 548 554 28 554 560 29 560 566 30 566 572 31 572 578 32 578 584 33 584 590 34 590 596 35 596 602 36 602 608 37 608 614 b Reserved c Channel 37 608 614 MHz is reserved exclusively for the radio astronomy service d In Hawaii the frequency band 488 494 MHz is allocated for non broadcast use This frequency band Channel 17 will not be assigned in Hawaii for use by television broadcast stations 28 FR 13660 Dec 14 1963 as amended at 35 FR 11179 July 11 1970 39 FR 10576 Mar 21 1974 47 FR 16789 Apr 20 1982 47 FR 30068 July 12 1982 47 FR 35989 Aug 18 1982 51 FR 18450 May 20 1986 70 FR 46676 Aug 10 2005 86 FR 66195 Nov 22 2021 73 606 Table of allotments The table of allotments set forth in 73 622 j contains the channels designated for the listed communities in the United States its Territories and possessions Channels designated with an asterisk are assigned for use by noncommercial educational broadcast stations only 86 FR 66195 Nov 22 2021 73 609 Zones a For the purpose of allotment and assignment the United States is divided
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into three zones as follows 1 Zone I consists of that portion of the United States located within the confines of the following lines drawn on the U S Albers Equal Area Projection Map based on standard parallels 291 2 and 451 2 North American datum Beginning at the most easterly point on the State boundary line between North Carolina and Virginia thence in a straight line to a point on the Virginia West Virginia boundary line located at north latitude 37 49 and west longitude 80 12 30 thence westerly along the southern boundary lines of the States of West Virginia Ohio Indiana and Illinois to a point at the junction of the Illinois Kentucky and Missouri State boundary lines thence northerly along the 47 CFR 73 609 a 1 enhanced display page 181 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 609 a 2 Radio Broadcast Services western boundary line of the State of Illinois to a point at the junction of the Illinois Iowa and Wisconsin State boundary lines thence easterly along the northern State boundary line of Illinois to the 90th meridian thence north along this meridian to the 43 5 parallel thence east along this parallel to the United States Canada border thence southerly and following that border until it again intersects the 43 5 parallel thence east along this parallel to the 71st meridian thence in a straight line to the intersection of the 69th meridian and the 45th parallel thence east along the 45th parallel to the Atlantic Ocean When any of the above lines pass through a city the city shall be considered to be located in Zone I See Figure 1 of 73 699 2 Zone II consists of that portion of
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the United States which is not located in either Zone I or Zone III and Puerto Rico Alaska Hawaiian Islands and the Virgin Islands 3 Zone III consists of that portion of the United States located south of a line drawn on the United States Albers Equal Area Projection Map based on standard parallels 29 50 and 45 50 North American datum beginning at a point on the east coast of Georgia and the 31st parallel and ending at the United States Mexican border consisting of arcs drawn with a 241 4 kilometer 150 mile radius to the north from the following specified points North latitude West longitude a 29 40 00 83 24 00 b 30 07 00 84 12 00 c 30 31 00 86 30 00 d 30 48 00 87 58 30 e 30 00 00 90 38 30 f 30 04 30 93 19 00 g 29 46 00 95 05 00 h 28 43 00 96 39 30 i 27 52 30 97 32 00 When any of the above arcs pass through a city the city shall be considered to be located in Zone II See Figure 2 of 73 699 28 FR 13660 Dec 14 1963 as amended at 33 FR 15422 Oct 17 1968 50 FR 23697 June 5 1985 51 FR 44070 Dec 8 1986 73 611 xxx Link to an amendment published at 89 FR 7243 Feb 1 2024 73 612 Protection from interference Link to an amendment published at 89 FR 7243 Feb 1 2024 a Permittees and licensees of TV broadcast stations are not protected from any interference which may be caused by the grant of a new station or of authority to modify the facilities of an existing station in accordance with the provisions of this
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subpart The nature and extent of the protection from interference 47 CFR 73 612 a enhanced display page 182 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 612 b Radio Broadcast Services accorded to TV broadcast stations is limited solely to the protection which results from the minimum allotment and station separation requirements and the rules and regulations with respect to maximum powers and antenna heights set forth in this subpart b When the Commission determines that grant of an application would serve the public interest convenience and necessity and the instrument of authorization specifies an antenna location in a designated antenna farm area which results in distance separation less than those specified in this subpart TV broadcast station permittees and licensees shall be afforded protection from interference equivalent to the protection afforded under the minimum distance separations specified in this subpart Note The nature and extent of the protection from interference accorded to TV broadcast stations which were authorized prior to April 14 1952 and which were operating on said date is limited not only as specified above but is further limited by any smaller separations existing between such stations on said date Where as a result of the adoption of the Table of Allotments or of changes in transmitter sites made by such stations after said date separations smaller than the required minimum are increased but still remain lower than the required minimum protection accorded such stations will be limited to the new separations 28 FR 13660 Dec 14 1963 as amended at 32 FR 8814 June 21 1967 50 FR 23698 June 5 1985 51 FR 44070 Dec 8 1986 73 613 Protection of Class A TV stations Link to an amendment published at 89 FR 7244 Feb
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1 2024 a An application for a new TV broadcast station or for changes in the operating facilities of an existing TV broadcast station will not be accepted for filing if it fails to comply with the requirements specified in this section Note to 73 613 a Licensees and permittees of TV broadcast stations that were authorized on November 29 1999 and applicants for new TV stations that had been cut off without competing applications or that were the winning bidder in a TV broadcast station auction as of that date or that were the proposed remaining applicant in a group of mutually exclusive applications for which a settlement agreement was on file as of that date may continue to operate with facilities that do not protect Class A TV stations Applications filed on or before November 29 1999 for a change in the operating facilities of such stations also are not required to protect Class A TV stations under the provisions of this section b Due to the frequency spacing which exists between TV channels 4 and 5 between channels 6 and 7 and between channels 13 and 14 first adjacent channel protection standards shall not be applicable to these pairs of channels Some interference protection requirements of this section only apply to stations transmitting on the UHF TV channels 14 through 36 see 73 603 a 47 CFR 73 613 b enhanced display page 183 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 613 c Radio Broadcast Services c A UHF TV broadcast station application will not be accepted if it specifies a site less than 100 kilometers from the transmitter site of a UHF Class A TV station operating on a channel which is the seventh channel above
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the requested channel Compliance with this requirement shall be determined based on a distance computation rounded to the nearest kilometer d A UHF TV broadcast station application will not be accepted if it specifies a site less than 32 kilometers from the transmitter site of a UHF Class A TV station that is authorized an effective radiated power of more than 50 kilowatts and operating on a channel which is the second third or fourth channel above or below the requested channel Compliance with this requirement shall be determined based on a distance computation rounded to the nearest kilometer e In cases where a TV broadcast station has been authorized facilities that do not meet the distance separation requirements of this section an application to modify such a station s facilities will not be accepted if it decreases that separation f New interference must not be caused to Class A TV stations authorized pursuant to Subpart J of this part within the protected contour defined in 73 6010 of this part For this prediction the TV broadcast station field strength is calculated from the proposed effective radiated power and the antenna height above average terrain in pertinent directions using the methods in 73 684 of this part 1 For co channel protection the field strength is calculated using the appropriate F 50 10 chart from Figure 9a 10a or 10c of 73 699 of this part 2 For TV broadcast stations that do not specify the same channel as the Class A TV station to be protected the field strength is calculated using the appropriate F 50 50 chart from Figure 9 10 or 10b of 73 699 of this part g A TV broadcast station application will not be accepted if the ratio in dB of its field strength
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to that of the Class A TV station at the Class A TV station s protected contour fails to meet the following 1 45 dB for co channel operations where the Class A TV station does not specify an offset carrier frequency or where the TV broadcast and Class A TV stations do not specify different offset carrier frequencies zero plus or minus or 28 dB for offset carrier frequency operation where the TV broadcast and Class A TV stations specify different offset carrier frequencies 2 6 dB when the protected Class A TV station operates on a VHF channel that is one channel above the requested channel 3 12 dB when the protected Class A TV station operates on a VHF channel that is one channel below the requested channel 4 15 dB when the protected Class A TV station operates on a UHF channel that is one channel above or below the requested channel 5 23 dB when the protected Class A TV station operates on a UHF channel that is fourteen channels below the requested channel 6 6 dB when the protected Class A TV station operates on a UHF channel that is fifteen channels below the requested channel h New interference must not be caused to digital Class A TV stations authorized pursuant to Subpart J of this part within the protected contour defined in 73 6010 of this part A TV broadcast station application will not be accepted if the ratio in dB of the field strength of the digital Class A TV station at the digital Class A TV station s protected contour to the field strength resulting from the facilities 47 CFR 73 613 h enhanced display page 184 of 580 47 CFR Part 73 up to date as of 2 20 2024
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47 CFR 73 613 i Radio Broadcast Services proposed in the TV broadcast station application fails to meet the D U signal ratios for analog TV into DTV specified in 73 623 c 2 and 73 623 c 3 of this part For digital Class A TV station protection the TV broadcast station field strength is calculated from the proposed effective radiated power and the antenna height above average terrain in pertinent directions using the methods in 73 684 of this part and using the appropriate F 50 10 chart from Figure 9a 10a or 10c of 73 699 of this part i In cases where a TV broadcast station has been authorized facilities that do not meet the interference protection requirements of this section an application to modify such a station s facilities will not be accepted if it is predicted to cause new interference within the protected contour of the Class A TV or digital Class A TV station j In support of a request for waiver of the interference protection requirements of this section an applicant for a TV broadcast station may make full use of terrain shielding and Longley Rice terrain dependent propagation methods to demonstrate that the proposed facility would not be likely to cause interference to Class A TV stations Guidance on using the Longely Rice methodology is provided in OET Bulletin No 69 which is available through the Internet at http www fcc gov oet info documents bulletins 69 65 FR 3001 May 10 2000 86 FR 66195 Nov 22 2021 73 614 Power and antenna height requirements Link to an amendment published at 89 FR 7244 Feb 1 2024 a Minimum requirements Applications will not be accepted for filing if they specify less than 10 dBk 100 watts horizontally polarized visual effective
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radiated power in any horizontal direction No minimum antenna height above average terrain is specified b Maximum power Applications will not be accepted for filing if they specify a power which exceeds the maximum permitted boundaries specified in the following formulas 1 Channels 2 6 in Zone I ERPMax 102 57 33 24 Log10 HAAT And 10 dBk ERPMax 20 dBk 2 Channels 2 6 in Zones II and III ERPMax 67 57 17 08 Log10 HAAT And 10 dBk ERPMax 20 dBk 3 Channels 7 13 in Zone I ERPMax 107 57 33 24 Log10 HAAT And 4 0 dBk ERPMax 25 dBk 47 CFR 73 614 b 3 enhanced display page 185 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 614 b 4 Radio Broadcast Services 4 Channels 7 13 in Zones II and III ERPMax 72 57 17 08 Log10 HAAT And 15 dBk ERPMax 25 dBk 5 Channels 14 36 in Zones I II and III ERPMax 84 57 17 08 Log10 HAAT And 27 dBk ERPMax 37 dBk Where ERPMax Maximum Effective Radiated Power measured in decibels above 1 kW dBk HAAT Height Above Average Terrain measured in meters The boundaries specified are to be used to determine the maximum possible combination of antenna height and ERPdBk When specifying an ERPdBk less than that permitted by the lower boundary any antenna HAAT can be used Also for values of antenna HAAT greater than 2 300 meters the maximum ERP is the lower limit specified for each equation 6 The effective radiated power in any horizontal or vertical direction may not exceed the maximum values permitted by this section 7 The effective radiated power at any angle above the horizontal shall be as low as the state
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of the art permits and in the same vertical plane may not exceed the effective radiated power in either the horizontal direction or below the horizontal whichever is greater c Determination of applicable rules The zone in which the transmitter of a television station is located or proposed to be located determines the applicable rules with respect to maximum antenna heights and powers for VHF stations when the transmitter is located in Zone I and the channel to be employed is located in Zone II or the transmitter is located in Zone II and the channel to be employed is located in Zone I 28 FR 13660 Dec 14 1963 as amended at 42 FR 20823 Apr 22 1977 42 FR 48881 Sept 26 1977 47 FR 35990 Aug 18 1982 50 FR 23698 June 5 1985 56 FR 49707 Oct 1 1991 58 FR 51250 Oct 1 1993 86 FR 66195 Nov 22 2021 73 615 Administrative changes in authorizations Link to an amendment published at 89 FR 7245 Feb 1 2024 In the issuance of television broadcast station authorizations the Commission will specify the transmitter output power and effective radiated power to the nearest 0 1 dBk Power specified by kWs shall be obtained by converting dBk to kWs to 3 significant figures Antenna heights above average terrain will be specified to the nearest meter Midway figures will be authorized in the lower alternative 47 CFR 73 615 enhanced display page 186 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 616 Radio Broadcast Services 50 FR 23698 June 5 1985 73 616 Post transition DTV station interference protection Link to an amendment published at 89 FR 7245 Feb 1 2024 a A petition to add a new channel to
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the post transition DTV Table of Allotments contained in 73 622 j of this subpart will not be accepted unless it meets The DTV to DTV geographic spacing requirements of 73 623 d with respect to all existing DTV allotments in the post transition DTV Table the principle community coverage requirements of 73 625 a the Class A TV and digital Class A TV protection requirements in paragraph f of this section the land mobile protection requirements of 73 623 e and the FM radio protection requirement of 73 623 f b The reference coordinates of a post transition DTV allotment shall be the authorized transmitter site or where such a transmitter site is not available for use as a reference point the coordinates as designated in the FCC order creating or modifying the post transition DTV Table of Allotments c The protected facilities of a post transition DTV allotment shall be the facilities effective radiated power antenna height and antenna directional radiation pattern if any authorized by a construction permit or license or where such an authorization is not available for establishing reference facilities the facilities designated in the FCC order creating or modifying the post transition DTV Table of Allotments d An application will not be accepted if it is predicted to cause interference to more than an additional 0 5 percent of the population served by another post transition DTV station For this purpose the population served by the station receiving additional interference does not include portions of the population within the noise limited service contour of that station that are predicted to receive interference from the post transition DTV allotment facilities of the applicant or portions of that population receiving masking interference from any other station 1 For evaluating compliance with the requirements of this paragraph
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interference to populations served is to be predicted based on the 2000 census population data and otherwise according to the procedure set forth in OET Bulletin No 69 Longley Rice Methodology for Evaluating TV Coverage and Interference February 6 2004 incorporated by reference see 73 8000 including population served within service areas determined in accordance with 73 622 e consideration of whether F 50 10 undesired signals will exceed the following desired to undesired D U signal ratios assumed use of a directional receiving antenna and use of the terrain dependent Longley Rice point to point propagation model Applicants may request the use of a cell size other than the default of 2 0 km per side but only requests for cell sizes of 1 0 km per side or 0 5 km per side will be considered The threshold levels at which interference is considered to occur are i For co channel stations the D U ratio is 15 dB This value is only valid at locations where the signal to noise ratio is 28 dB or greater At the edge of the noise limited service area where the signal to noise S N ratio is 16 dB this value is 23 dB At locations where the S N ratio is greater than 16 dB but less than 28 dB D U values are computed from the following formula D U 15 10log10 1 0 1 0 10 x 10 Where x S N 15 19 minimum signal to noise ratio ii For interference from a lower first adjacent channel the D U ratio is 28 dB 47 CFR 73 616 d 1 ii enhanced display page 187 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 616 d 1 iii
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Radio Broadcast Services iii For interference from an upper first adjacent channel the D U ratio is 26 dB 2 Due to the frequency spacing that exists between Channels 4 and 5 between Channels 6 and 7 and between Channels 13 and 14 the minimum adjacent channel technical criteria specified in this section shall not be applicable to these pairs of channels see 73 603 a e A petition to add a new channel to the post transition DTV Table or a post transition DTV station application that proposes to expand its allotted or authorized coverage area in any direction will not be accepted if it is predicted to cause interference to a Class A TV station or to a digital Class A TV station authorized pursuant to subpart J of this part within the protected contour defined in 73 6010 1 For evaluating compliance with the requirements of this paragraph interference to populations served is to be predicted based on the most recent official decennial U S Census population data as identified by the Media Bureau in a Public Notice issued not less than 60 days prior to use of the data for a specific year in application processing and otherwise according to the procedure set forth in OET Bulletin No 69 Longley Rice Methodology for Evaluating TV Coverage and Interference February 6 2004 incorporated by reference see 73 8000 including population served within service areas determined in accordance with 73 622 e consideration of whether F 50 10 undesired signals will exceed the following desired to undesired D U signal ratios assumed use of a directional receiving antenna and use of the terrain dependent Longley Rice point to point propagation model Applicants may request the use of a cell size other than the default of 2 0 km
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per side but only requests for cell sizes of 1 0 km per side or 0 5 km per side will be considered The threshold levels at which interference is considered to occur are 2 Interference is predicted to occur if the ratio in dB of the field strength of a digital Class A TV station at its protected contour to the field strength resulting from the facilities proposed in the DTV application calculated using the appropriate F 50 10 chart from Figure 9a 10a or 10c of 73 699 fails to meet the D U signal ratios specified in paragraph e of this section 3 In support of a request for waiver of the interference protection requirements of this section an applicant for a post transition DTV broadcast station may make full use of terrain shielding and Longley Rice terrain dependent propagation methods to demonstrate that the proposed facility would not be likely to cause interference to Class A TV stations Guidance on using the Longley Rice methodology is provided in OET Bulletin No 69 which is available through the Internet at http www fcc gov oet info documents bulletins 69 f Reserved g The interference protection requirements contained in this section apply to television station operations under both the DTV transmission standard in 73 682 d and the Next Gen TV transmission standard in 73 682 f 73 FR 5682 Jan 30 2008 as amended at 83 FR 5021 Feb 2 2018 83 FR 5544 Feb 8 2018 86 FR 66195 Nov 22 2021 73 617 xxx Link to an amendment published at 89 FR 7245 Feb 1 2024 73 618 xxx 47 CFR 73 618 enhanced display page 188 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 619
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Radio Broadcast Services Link to an amendment published at 89 FR 7246 Feb 1 2024 73 619 xxx Link to an amendment published at 89 FR 7246 Feb 1 2024 73 620 xxx Link to an amendment published at 89 FR 7247 Feb 1 2024 73 621 Noncommercial educational TV stations Link to an amendment published at 89 FR 7248 Feb 1 2024 In addition to the other provisions of this subpart the following shall be applicable to noncommercial educational television broadcast stations a Except as provided in paragraph b of this section noncommercial educational broadcast stations will be licensed only to nonprofit educational organizations upon a showing that the proposed stations will be used primarily to serve the educational needs of the community for the advancement of educational programs and to furnish a nonprofit and noncommercial television broadcast service 1 In determining the eligibility of publicly supported educational organizations the accreditation of their respective state departments of education shall be taken into consideration 2 In determining the eligibility of privately controlled educational organizations the accreditation of state departments of education or recognized regional and national educational accrediting organizations shall be taken into consideration b Where a municipality or other political subdivision has no independently constituted educational organization such as for example a board of education having autonomy with respect to carrying out the municipality s educational program such municipality shall be eligible for a noncommercial educational television broadcast station In such circumstances a full and detailed showing must be made that a grant of the application will be consistent with the intent and purpose of the Commission s rules and regulations relating to such stations c Noncommercial educational television broadcast stations may transmit educational cultural and entertainment programs and programs designed for use by schools and school systems in
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connection with regular school courses as well as routine and administrative material pertaining thereto d A noncommercial educational television station may broadcast programs produced by or at the expense of or furnished by persons other than the licensee if no other consideration than the furnishing of the program and the costs incidental to its production and broadcast are received by the licensee The payment of line charges by another station network or someone other than the licensee of a noncommercial educational television station or general contributions to the operating costs of a station shall not be considered as being prohibited by this paragraph 47 CFR 73 621 d enhanced display page 189 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 621 e Radio Broadcast Services e Each station shall furnish a nonprofit and noncommercial broadcast service Noncommercial educational television stations shall be subject to the provisions of 73 1212 to the extent that they are applicable to the broadcast of programs produced by or at the expense of or furnished by others No promotional announcements on behalf of for profit entities shall be broadcast at any time in exchange for the receipt in whole or in part of consideration to the licensee its principals or employees However acknowledgements of contributions can be made The scheduling of any announcements and acknowledgements may not interrupt regular programming except as permitted under paragraph f of this section Note to paragraph e Commission interpretation of this rule including the acceptable form of acknowledgements may be found in the Second Report and Order in Docket No 21136 Commission Policy Concerning the Noncommercial Nature of Educational Broadcast Stations 86 F C C 2d 141 1981 the Memorandum Opinion and Order in Docket No 21136 90 FCC 2d
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895 1982 the Memorandum Opinion and Order in Docket 21136 49 FR 13534 April 5 1984 and the Report and Order in Docket No 12 106 Noncommercial Educational Station Fundraising for Third Party Non Profit Organizations FCC 17 41 April 20 2017 f A noncommercial educational television station may interrupt regular programming to conduct fundraising activities on behalf of a third party non profit organization provided that all such fundraising activities conducted during any given year do not exceed one percent of the station s total annual airtime A station may use the prior year s total airtime for purposes of determining how many hours constitute one percent of its total annual airtime With respect to stations that multicast programming on two or more separate channels the one percent annual limit will apply separately to each individual programming stream For purposes of this paragraph a non profit organization is an entity that qualifies as a non profit organization under 26 U S C 501 c 3 1 Audience disclosure A noncommercial educational television station that interrupts regular programming to conduct fundraising activities on behalf of a third party non profit organization must air a disclosure during such activities clearly stating that the fundraiser is not for the benefit of the station itself and identifying the entity for which it is fundraising The station must air the audience disclosure at the beginning and the end of each fundraising program and at least once during each hour in which the program is on the air 2 Reimbursement A noncommercial educational television station that interrupts regular programming to conduct fundraising activities on behalf of a third party non profit organization may accept reimbursement of expenses incurred in conducting third party fundraising activities or airing third party fundraising programs 3 Exemption No noncommercial educational
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television station that receives funding from the Corporation for Public Broadcasting shall have the authority to interrupt regular programming to conduct fundraising activities on behalf of a third party non profit organization g Telecommunications Service on the Vertical Blanking Interval and in the Visual Signal The provisions governing VBI and visual signal telecommunications service in 73 646 are applicable to noncommercial educational TV stations h Non program related data signals transmitted on Line 21 pursuant to 73 682 a 22 ii may be used for remunerative purposes 47 CFR 73 621 h enhanced display page 190 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 621 i Radio Broadcast Services i Mutually exclusive applications for noncommercial educational TV stations operating on reserved channels shall be resolved pursuant to the point system in subpart K j With respect to the provision of advanced television services the requirements of this section will apply to the entire digital bitstream of noncommercial educational television stations including the provision of ancillary or supplementary services 28 FR 13660 Dec 14 1963 as amended at 35 FR 7558 May 15 1970 47 FR 36179 Aug 19 1982 48 FR 27068 June 13 1983 49 FR 29069 July 18 1984 50 FR 4664 Feb 1 1985 50 FR 4684 Feb 1 1985 61 FR 36304 July 10 1996 65 FR 36378 June 8 2000 66 FR 58982 Nov 26 2001 82 FR 21135 May 5 2017 73 622 Digital television table of allotments Link to an amendment published at 89 FR 6024 Jan 31 2024 Link to an amendment published at 89 FR 7248 Feb 1 2024 a General The following table of allotments contains the digital television DTV channel allotments designated for the listed communities in the United States
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its Territories and possessions Requests for addition of new DTV allotments or requests to change the channels allotted to a community must be made in a petition for rule making to amend the DTV Table of Allotments A request to amend the DTV table to change the channel of an allotment in the DTV table will be evaluated for technical acceptability using engineering criteria set forth in 73 623 c A request to amend the DTV table to add a new allotment will be evaluated for technical acceptability using the geographic spacing criteria set forth in 73 623 d DTV allotments designated with an asterisk are assigned for use by non commercial educational broadcast stations only Rules governing noncommercial educational TV stations are contained in 73 621 Where there is only one technically available channel available in a community an entity that would be eligible to operate a noncommercial educational broadcast station may prior to application initiate a rulemaking proceeding requesting that an unoccupied or new channel in the community be changed or added as reserved only for noncommercial educational broadcasting upon demonstrating that the noncommercial educational proponent would provide a first or second noncommercial educational TV service to 2 000 or more people who constitute 10 of the population within the proposed allocation s noise limited contour 1 Petitions requesting the addition of a new allotment must specify a channel in the range of channels 2 36 2 Petitions requesting a change in the channel of an initial allotment must specify a channel in the range of channels 2 58 b Reserved c 1 Availability of channels Applications may be filed to construct DTV broadcast stations only on the channels designated in the DTV Table of Allotments set forth in paragraph b of this section and only in the
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communities listed therein Applications that fail to comply with this requirement whether or not accompanied by a petition to amend the DTV Table will not be accepted for filing However applications specifying channels that accord with publicly announced FCC Orders changing the DTV Table of Allotments will be accepted for filing even if such applications are tendered before the 47 CFR 73 622 c 1 enhanced display page 191 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 c 2 Radio Broadcast Services effective dates of such channel change An application for authority to construct a DTV station on an allotment in the initial DTV table may only be filed by the licensee or permittee of the analog TV station with which that initial allotment is paired as set forth in Appendix B of the Memorandum Opinion and Order on Reconsideration of the Sixth Report and Order in MM Docket 87 268 FCC 98 24 Memorandum Opinion and Order adopted January 29 1998 Copies of the Memorandum Opinion and Order are available for public inspection through the Federal Communications Commission s Reference Information Center This document is also available on the FCC homepage at https www fcc gov Applications may also be filed to implement an exchange of channel allotments between two or more licensees or permittees of analog TV stations in the same community the same market or in adjacent markets provided however that the other requirements of this section and 73 623 are met with respect to each such application 2 Notwithstanding paragraph c 1 of this section an application may be filed for a channel or community not listed in the DTV Table of Allotments if it is consistent with the rules and policies established in the Third
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Report and Order in WT Docket 99 168 FCC 01 25 adopted January 18 2001 Where such a request is approved the Media Bureau will change the DTV Table of Allotments to reflect that approval d Reference points and distance computations 1 The reference coordinates of a DTV allotment included in the initial DTV Table of Allotments are the coordinates of the authorized transmitting antenna site of the associated analog TV station as set forth in Appendix B of the Memorandum Opinion and Order referenced above An application for authority to construct or modify DTV facilities on such an allotment may specify an alternate location for the DTV transmitting antenna that is within 5 kilometers of the DTV allotment reference coordinates without consideration of electromagnetic interference to other DTV or analog TV broadcast stations allotments or applications provided the application complies with paragraph f 2 of this section Location of the transmitting antenna of such a station at a site more than 5 kilometers from the DTV allotment reference coordinates must comply with the provisions of section 73 623 c In the case where a DTV station has been granted authority to construct more than 5 kilometers from its reference coordinates pursuant to section 73 623 c and its authorized coverage area extends in any azimuthal direction beyond the DTV coverage area determined for the DTV allotment reference facilities then the coordinates of such authorized site are to be used in addition to the coordinates of the DTV allotment to determine protection from new DTV allotments pursuant to 73 623 d and from subsequent DTV applications filed pursuant to 73 623 c 2 The reference coordinates of a DTV allotment not included in the initial DTV Table of Allotments shall be the authorized transmitter site or where such a transmitter
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site is not available for use as a reference point the coordinates as designated in the FCC order modifying the DTV Table of Allotments e DTV Service Areas 47 CFR 73 622 e enhanced display page 192 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 e 1 Radio Broadcast Services 1 The service area of a DTV station is the geographic area within the station s noise limited F 50 90 contour where its signal strength is predicted to exceed the noise limited service level The noise limited contour is the area in which the predicted F 50 90 field strength of the station s signal in dB above 1 microvolt per meter dBu as determined using the method in 73 625 b exceeds the following levels these are the levels at which reception of DTV service is limited by noise dBu Channels 2 6 28 Channels 7 13 36 Channels 14 36 41 2 Within this contour service is considered available at locations where the station s signal strength as predicted using the terrain dependent Longley Rice point to point propagation model exceeds the levels above Guidance for evaluating coverage areas using the Longley Rice methodology is provided in OET Bulletin No 69 Copies of this document are available on the FCC s website See https www fcc gov general oet bulletins line Note to paragraph e 2 During the transition in cases where the assigned power of a UHF DTV station in the initial DTV Table is 1000 kW the Grade B contour of the associated analog television station as authorized on April 3 1997 shall be used instead of the noise limited contour of the DTV station in determining the DTV station s service area In such
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cases the DTV service area is the geographic area within the station s analog Grade B contour where its DTV signal strength is predicted to exceed the noise limited service level i e 41 dB as determined using the Longley Rice methodology 3 For purposes of determining whether interference is caused to a DTV station s service area the maximum technical facilities i e antenna height above average terrain antenna HAAT and effective radiated power ERP specified for the station s allotment are to be used in determining its service area f 1 Reserved 2 An application for authority to construct or modify DTV facilities will not be subject to further consideration of electromagnetic interference to other DTV or analog TV broadcast stations allotments or applications provided that i The proposed ERP in each azimuthal direction is equal to or less than the reference ERP in that direction and ii The proposed antenna HAAT is equal to or less than the reference antenna HAAT or the proposed antenna HAAT exceeds the reference antenna HAAT by 10 meters or less and the reference ERP in paragraph f 2 i of this section is adjusted in accordance with paragraph f 3 of this section and iii The application complies with the location provisions in paragraph d 1 of this section 3 47 CFR 73 622 f 3 enhanced display page 193 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 f 3 i Radio Broadcast Services i A DTV station may increase its antenna HAAT by up to 10 meters from that specified in Appendix B if it reduces its DTV power to a level at or below the level of adjusted DTV power computed in the following formula ERP adjustment in dB
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20log H1 H2 Where H1 Reference antenna HAAT specified in the DTV Table and H2 Actual antenna HAAT ii Alternatively a DTV application that specifies an antenna HAAT within 25 meters below that specified in Appendix B may adjust its power upward to a level at or below the adjusted DTV power in accordance with the formula in paragraph f 3 i of this section without an interference showing For a proposed antenna more than 25 meters below the reference antenna HAAT the DTV station may increase its ERP up to the level permitted for operation with an antenna that is 25 meters below the station s reference antenna HAAT 4 UHF DTV stations may request an increase in power up to a maximum of 1000 kW ERP to enhance service within their authorized service area 5 Licensees and permittees assigned a DTV channel in the initial DTV Table of Allotments may request an increase in either ERP in some azimuthal direction or antenna HAAT or both that exceed the initial technical facilities specified for the allotment in Appendix B of the Memorandum Opinion and Order referenced in paragraph c of this section up to the maximum permissible limits on DTV power and antenna height set forth in paragraph f 6 f 7 or f 8 of this section as appropriate or up to that needed to provide the same geographic coverage area as the largest station within their market whichever would allow the largest service area Such requests must be accompanied by a technical showing that the increase complies with the technical criteria in 73 623 c and thereby will not result in new interference exceeding the de minimis standard set forth in that section or statements agreeing to the change from any co channel or adjacent channel stations
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that might be affected by potential new interference in accordance with 73 623 f In the case where a DTV station has been granted authority to construct pursuant to 73 623 c and its authorized coverage area extends in any azimuthal direction beyond the DTV coverage area determined for the DTV allotment reference facilities then the authorized DTV facilities are to be used in addition to the assumed facilities of the initial DTV allotment to determine protection from new DTV allotments pursuant to 73 623 d and from subsequent DTV applications filed pursuant to 73 623 c The provisions of this paragraph regarding increases in the ERP or antenna height of DTV stations on channels in the initial DTV Table of Allotments shall also apply in cases where the licensee or permittee seeks to change the station s channel as well as alter its ERP and antenna HAAT Licensees and permittees are advised that where a channel change is requested it may in fact be necessary in specific cases for the station to operate with reduced power a lower antenna or a directional antenna to avoid causing new interference to another station 6 A DTV station that operates on a channel 2 6 allotment created subsequent to the initial DTV Table will be allowed a maximum ERP of 10 kW if its antenna HAAT is at or below 305 meters and it is located in Zone I or a maximum ERP of 45 kW if its antenna HAAT is at or below 305 meters and it is located in Zone II or Zone III A DTV station that operates on a channel 2 6 allotment included in the initial DTV Table of Allotments may request an increase in power and or antenna HAAT up to these maximum levels provided the
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increase also complies with the provisions of paragraph f 5 of this section 47 CFR 73 622 f 6 enhanced display page 194 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 f 6 i Radio Broadcast Services i At higher HAAT levels such DTV stations will be allowed to operate with lower maximum ERP levels in accordance with the following table and formulas the allowable maximum ERP for intermediate values of HAAT is determined using linear interpolation based on the units employed in the table Maximum Allowable ERP and Antenna Height for DTV Stations In Zones II or III on Channels 2 6 Antenna HAAT meters ERP kW 610 10 580 11 550 12 520 14 490 16 460 19 425 22 395 26 365 31 335 37 305 45 ii For DTV stations located in Zone I that operate on channels 2 6 with an HAAT that exceeds 305 meters the allowable maximum ERP expressed in decibels above 1 kW dBk is determined using the following formula with HAAT expressed in meters ERPmax 92 57 33 24 log10 HAAT iii For DTV stations located in Zone II or III that operate on channels 2 6 with an HAAT that exceeds 610 meters the allowable maximum ERP expressed in decibels above 1 kW dBk is determined using the following formula with HAAT expressed in meters ERPmax 57 57 17 08 log10 HAAT 7 A DTV station that operates on a channel 7 13 allotment created subsequent to the initial DTV Table will be allowed a maximum ERP of 30 kW if its antenna HAAT is at or below 305 meters and it is located in Zone I or a maximum ERP of 160 kW if its antenna HAAT is at
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or below 305 meters and it is located in Zone II or Zone III A DTV station that operates on a channel 7 13 allotment included in the initial DTV Table of Allotments may request an increase in power and or antenna HAAT up to these maximum levels provided the increase also complies with the provisions of paragraph f 5 of this section i At higher HAAT levels such DTV stations will be allowed to operate with lower maximum ERP levels in accordance with the following table and formulas the allowable maximum ERP for intermediate values of HAAT is determined using linear interpolation based on the units employed in the table 47 CFR 73 622 f 7 i enhanced display page 195 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 f 7 ii Radio Broadcast Services Maximum Allowable ERP and Antenna Height for DTV Stations In Zones II or III on Channels 7 13 Antenna HAAT meters ERP kW 610 30 580 34 550 40 520 47 490 54 460 64 425 76 395 92 365 110 335 132 305 160 ii For DTV stations located in Zone I that operate on channels 7 13 with an HAAT that exceeds 305 meters the allowable maximum ERP expressed in decibels above 1 kW dBk is determined using the following formula with HAAT expressed in meters ERPmax 97 35 33 24 log10 HAAT iii For DTV stations located in Zone II or III that operate on channels 7 13 with an HAAT that exceeds 610 meters the allowable maximum ERP expressed in decibels above 1 kW dBk is determined using the following formula with HAAT expressed in meters ERPmax 62 34 17 08 log10 HAAT 8 A DTV station that operates on
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a channel 14 59 allotment created subsequent to the initial DTV Table will be allowed a maximum ERP of 1000 kW if their antenna HAAT is at or below 365 meters A DTV station that operates on a channel 14 59 allotment included in the initial DTV Table of Allotments may request an increase in power and or antenna HAAT up to these maximum levels provided the increase also complies with the provisions of paragraph f 5 of this section i At higher HAAT levels such DTV stations will be allowed to operates with lower maximum ERP levels in accordance with the following table and formulas the allowable maximum ERP for intermediate values of HAAT is determined using linear interpolation based on the units employed in the table Maximum Allowable ERP and Antenna Height for DTV Stations on Channels 14 59 All Zones Antenna HAAT meters ERP kW 610 316 580 350 550 400 520 460 47 CFR 73 622 f 8 i enhanced display page 196 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 f 8 ii Radio Broadcast Services Antenna HAAT meters ERP kW 490 540 460 630 425 750 395 900 365 1000 ii For DTV stations located in Zone I II or III that operate on channels 14 59 with an HAAT that exceeds 610 meters the allowable maximum ERP expressed in decibels above 1 kW dBk is determined using the following formula with HAAT expressed in meters ERPmax 72 57 17 08 log10 HAAT g 1 Reserved 2 Unless it conflicts with operation complying with paragraph g 1 of this section where a low power television station or TV translator station is operating on the lower adjacent channel within 32 km of the DTV station
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and notifies the DTV station that it intends to minimize interference by precisely maintaining its carrier frequencies the DTV station shall cooperate in locking its carrier frequency to a common reference frequency and shall be responsible for any costs relating to its own transmission system in complying with this provision h 1 The power level of emissions on frequencies outside the authorized channel of operation must be attenuated no less than the following amounts below the average transmitted power within the authorized channel In the first 500 kHz from the channel edge the emissions must be attenuated no less than 47 dB More than 6 MHz from the channel edge emissions must be attenuated no less than 110 dB At any frequency between 0 5 and 6 MHz from the channel edge emissions must be attenuated no less than the value determined by the following formula Attenuation in dB 11 5 Δf 3 6 Where Δf frequency difference in MHz from the edge of the channel 2 This attenuation is based on a measurement bandwidth of 500 kHz Other measurement bandwidths may be used as long as appropriate correction factors are applied Measurements need not be made any closer to the band edge than one half of the resolution bandwidth of the measuring instrument Emissions include sidebands spurious emissions and radio frequency harmonics Attenuation is to be measured at the output terminals of the transmitter including any filters that may be employed In the event of interference caused to any service greater attenuation may be required i Reserved j Table of TV Allotments Community Channel No Alabama Anniston 9 47 CFR 73 622 j enhanced display page 197 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services
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Community Channel No Bessemer 14 Birmingham 7 10 20 29 30 Demopolis 19 Dothan 21 36 Dozier 10 Florence 2 22 Gadsden 26 Gulf Shores 27 Homewood 21 Hoover 33 Huntsville 15 17 18 19 24 Louisville 30 Mobile 9 15 18 20 23 30 Montgomery 8 22 27 28 31 Mount Cheaha 12 Opelika 17 Ozark 33 Selma 25 34 Troy 19 Tuscaloosa 6 36 Tuskegee 18 Vernon 4 Alaska Anchorage 7 8 10 12 20 26 28 33 Bethel 3 Fairbanks 7 9 18 26 Juneau 10 11 Ketchikan 13 North Pole 20 Sitka 7 Arizona Douglas 36 Flagstaff 13 22 32 Green Valley 34 Holbrook 11 Kingman 19 Mesa 18 Phoenix 8 10 15 17 20 24 26 27 29 33 Prescott 7 Sierra Vista 21 47 CFR 73 622 j enhanced display page 198 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Tolleson 31 Tucson 9 16 19 23 25 28 30 32 Yuma 13 27 Arkansas Arkadelphia 13 Camden 18 El Dorado 10 27 Eureka Springs 25 Fayetteville 9 15 Fort Smith 18 21 27 Harrison 31 Hot Springs 16 Jonesboro 18 20 27 Little Rock 7 12 22 28 30 32 36 Mountain View 13 Pine Bluff 24 34 Rogers 33 Springdale 29 California Anaheim 12 Arcata 22 Avalon S Bakersfield 10 25 26 33 Bishop 20 Calipatria 36 Ceres 15 Chico 20 36 Clovis 27 Colusa 2 Concord S Corona 25 Cotati 5 El Centro 9 22 Eureka 3 11 17 28 Fort Bragg 4 8 Fremont S Fresno 7 20 30 32 34 Garden Grove S Hanford 21 Huntington Beach S 47 CFR 73 622 j enhanced display page 199 of 580 47 CFR Part
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73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Inglewood S Long Beach 18 Los Angeles 4 7 9 11 13 28 31 34 35 36 S Merced 11 Modesto 18 Monterey 32 S Oakland 31 Ontario 29 Palm Springs 26 28 Palo Alto S Paradise 30 Porterville 23 Rancho Palos Verdes 30 Redding 9 15 Riverside S Sacramento 9 10 21 22 24 35 Salinas 8 11 San Bernardino 5 24 San Diego 8 10 17 18 19 26 San Francisco 7 12 20 28 29 30 32 S S S San Jose 13 19 33 36 S San Luis Obispo 15 34 San Mateo 27 Sanger 36 Santa Ana 33 Santa Barbara 21 27 Santa Maria 19 Stockton 23 25 26 Tulare 3 Twentynine Palms 23 Vallejo 34 Ventura S Visalia 22 28 Watsonville 25 Colorado Boulder 32 Broomfield 13 Castle Rock 15 Colorado Springs 22 24 26 Denver 7 9 18 20 28 31 33 34 35 36 47 CFR 73 622 j enhanced display page 200 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Durango 15 20 33 Fort Collins 21 Glenwood Springs 23 Grand Junction 2 7 12 15 18 Greeley 17 Longmont 29 Montrose 13 Pueblo 8 25 27 Steamboat Springs 10 Sterling 23 Connecticut Bridgeport S Hartford 30 34 36 S New Britain 31 New Haven 10 S S New London 28 Norwich 9 Stamford 21 Waterbury 33 Delaware Dover 5 Seaford 24 Wilmington 2 13 34 District of Columbia Washington 7 9 31 33 34 36 S S Florida Boca Raton 25 Boynton Beach S Bradenton 29 Cape Coral 34 Clearwater 21 Clermont 23
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Cocoa 30 32 Daytona Beach 11 15 Destin 29 Fort Lauderdale 30 Fort Myers 15 22 31 Fort Pierce 18 20 Fort Walton Beach 14 21 25 Gainesville 8 16 36 47 CFR 73 622 j enhanced display page 201 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No High Springs 29 Hollywood 24 Jacksonville 9 13 14 18 19 20 21 Key West 3 8 Lake Worth 36 Lakeland 18 Leesburg 7 S Live Oak 17 Marianna 26 Melbourne 14 22 Miami 9 10 21 22 23 26 27 28 29 31 32 Naples 28 32 New Smyrna Beach 24 Ocala 31 Orange Park 10 Orlando 26 27 28 33 34 35 Palm Beach 7 Panama City 9 13 16 28 Panama City Beach 33 Pensacola 17 24 34 35 Sarasota 24 St Petersburg 10 19 S Stuart 34 Tallahassee 22 24 27 32 Tampa 9 12 13 17 20 S Tequesta 16 Tice 33 Venice 25 West Palm Beach 12 13 35 Georgia Albany 10 29 Athens 7 18 Atlanta 10 19 21 25 27 31 32 34 36 Augusta 27 28 36 Bainbridge 19 Baxley 35 Brunswick 24 Chatsworth 4 Cochran 9 Columbus 5 11 15 24 35 47 CFR 73 622 j enhanced display page 202 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Cordele 34 Dalton 28 Dawson 7 Macon 13 26 30 33 Monroe 22 Pelham 6 Perry 23 Rome 16 Savannah 8 16 22 23 Thomasville 20 Toccoa 24 Valdosta 31 Waycross 7 Wrens 6 Hawaii Hilo 9 11 13 22 23 Honolulu 8 11 18 19 20 22 23
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26 27 31 33 35 Kailua 29 Kailua Kona 25 Kaneohe 32 Wailuku 7 10 12 16 21 24 Waimanalo 15 Idaho Boise 7 15 20 21 Caldwell 10 Coeur d Alene 18 Filer 18 Idaho Falls 18 20 36 Lewiston 32 Moscow 12 Nampa 13 24 Pocatello 17 23 31 Sun Valley 5 Twin Falls 11 22 34 Illinois Aurora S Bloomington 28 Carbondale 8 Champaign 32 34 Charleston 30 47 CFR 73 622 j enhanced display page 203 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Chicago 12 19 22 23 24 25 33 34 S Decatur 20 22 East St Louis 28 Freeport 9 Galesburg 8 Harrisburg 34 Jacksonville 18 Joliet 35 Macomb 36 Marion 30 Moline 23 31 Mount Vernon 13 Naperville S Olney 23 Oswego 10 Peoria 24 25 26 35 Quincy 22 32 34 Rock Island 4 Rockford 13 16 36 Springfield 11 15 16 Urbana 9 36 Indiana Angola 12 Bloomington 27 28 33 S Elkhart 30 Evansville 9 12 22 26 28 Fort Wayne 18 20 24 32 34 Gary 17 S Hammond 21 Indianapolis 7 9 13 21 22 23 25 Kokomo 15 Lafayette 11 Marion S Muncie 19 Richmond S Salem 16 South Bend 27 29 31 36 Terre Haute 10 18 35 Vincennes 31 Iowa 47 CFR 73 622 j enhanced display page 204 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Ames 5 21 23 Burlington 21 Cedar Rapids 22 27 29 32 Council Bluffs 33 Davenport 17 30 34 Des Moines 8 13 16 19 34 Dubuque 14 Fort Dodge 25 Iowa City
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12 25 Mason City 18 24 Newton 36 Ottumwa 15 Red Oak 35 Sioux City 9 14 28 30 32 Waterloo 7 35 Kansas Colby 17 19 Derby 31 Dodge City 21 Ensign 6 Garden City 11 13 Goodland 10 Great Bend 22 Hays 7 16 Hoisington 14 Hutchinson 8 19 35 Lakin 8 Lawrence 25 Pittsburg 7 13 Salina 17 Topeka 11 12 13 16 27 Wichita 10 15 26 28 Kentucky Ashland 13 36 Beattyville 7 Bowling Green 13 18 24 29 Covington 22 Danville 19 Elizabethtown 23 Harlan S 47 CFR 73 622 j enhanced display page 205 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Hazard 20 33 Lexington 21 27 28 35 Louisville 8 11 14 30 32 34 36 Madisonville 31 Morehead 30 Murray 17 Newport 15 Owensboro 17 Owenton 24 Paducah 19 23 25 Pikeville 23 Richmond 25 Somerset 17 Louisiana Alexandria 26 31 33 35 Baton Rouge 9 13 24 25 34 Columbia 11 Hammond 35 Lafayette 10 16 23 28 Lake Charles 7 18 20 Minden 32 Monroe 13 24 New Iberia 17 New Orleans 15 19 21 23 26 27 28 29 33 Shreveport 16 17 23 28 34 Slidell 17 West Monroe 19 22 Maine Augusta 20 Bangor 2 7 13 Biddeford 36 Calais 10 Lewiston 24 Orono 22 Poland Spring 8 Portland 15 31 34 Presque Isle 8 10 Waterville 17 Maryland Annapolis 21 47 CFR 73 622 j enhanced display page 206 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Baltimore 11 12 22 25 26 27 S Frederick 28 Hagerstown 23 29
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Oakland 26 Salisbury 16 29 32 Silver Spring S Massachusetts Boston 5 20 21 22 32 33 34 35 Cambridge S Foxborough S Lowell S Marlborough 27 New Bedford 24 S Norwell 36 Pittsfield 7 Springfield 11 13 26 Woburn S Worcester 19 Michigan Alpena 11 24 Ann Arbor 24 Bad Axe 15 Battle Creek 17 21 Bay City 23 30 Cadillac 9 32 34 Calumet 5 Cheboygan 16 Detroit 7 20 21 25 31 32 34 East Lansing 33 Escanaba 32 Flint 12 16 Grand Rapids 7 11 13 19 Ishpeming 10 Kalamazoo 5 8 22 Lansing 14 28 S Manistee 20 Marquette 8 19 35 Mount Clemens 27 Mount Pleasant 26 Muskegon 24 47 CFR 73 622 j enhanced display page 207 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Onondaga 10 Saginaw 18 36 Sault Ste Marie 8 10 Traverse City 29 35 Vanderbilt 21 Minnesota Alexandria 7 24 Appleton 10 Austin 20 36 Bemidji 9 26 Brainerd 28 Chisholm 11 Crookston 16 Duluth 8 10 18 27 33 Hibbing 13 31 Mankato 12 Minneapolis 9 22 29 30 31 32 Redwood Falls 27 Rochester 10 26 St Cloud 16 St Paul 23 34 35 Thief River Falls 10 Walker 12 Worthington 15 Mississippi Biloxi 16 32 Booneville 9 Bude 18 Columbus 27 Greenville 15 Greenwood 25 32 Gulfport 25 Hattiesburg 22 Holly Springs 26 Jackson 12 14 20 21 23 30 Laurel 7 Magee 34 Meridian 13 24 28 31 Mississippi State 8 Natchez 15 47 CFR 73 622 j enhanced display page 208 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No
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Oxford 36 Senatobia S Tupelo 11 17 Vicksburg 36 West Point 16 Missouri Cape Girardeau 32 36 Columbia 17 27 Hannibal 22 Jefferson City 20 29 Joplin 17 23 35 Kansas City 18 24 29 30 31 32 34 36 Kirksville 33 Osage Beach 22 Poplar Bluff 15 Sedalia 15 Springfield 10 16 19 28 St Joseph 7 21 St Louis 14 23 24 26 31 33 35 Montana Billings 11 16 18 20 Bozeman 8 27 Butte 15 19 20 24 Glendive 5 Great Falls 8 17 21 22 26 Hardin 22 Havre 9 Helena 29 31 Kalispell 15 17 Miles City 3 Missoula 7 11 20 23 Nebraska Alliance 13 Bassett 7 Grand Island 11 Hastings 5 28 Hayes Center 6 Kearney 18 Lexington 26 Lincoln 8 10 15 27 47 CFR 73 622 j enhanced display page 209 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No McCook 12 Merriman 12 Missoula 11 20 23 25 Norfolk 19 North Platte 2 9 Omaha 17 20 22 26 29 31 Scottsbluff 29 Sidney 7 York 24 Nevada Elko 20 Ely 27 Henderson 24 Las Vegas 2 7 11 16 22 26 29 Laughlin 32 Paradise 20 Reno 8 11 12 15 20 23 26 Tonopah 9 Winnemucca 16 New Hampshire Concord 23 Derry S Durham 11 Keene 18 Littleton 23 Manchester 9 Merrimack 29 New Jersey Atlantic City 4 Camden 23 Jersey City S Linden 35 Middletown Township 3 Millville S Montclair S Mount Laurel S New Brunswick 8 Newark 12 26 Newton 18 Paterson S 47 CFR 73 622 j enhanced display page 210 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73
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622 j Radio Broadcast Services Community Channel No Princeton S Secaucus 25 Trenton S Vineland S Wildwood 36 New Mexico Alamogordo 4 Albuquerque 7 13 16 17 22 24 26 35 36 Carlsbad 19 25 Clovis 12 Farmington 12 Hobbs 29 Las Cruces 23 26 Portales 32 Roswell 8 10 21 27 Santa Fe 8 10 27 29 Silver City 10 12 New York Albany 8 21 24 Amsterdam 19 Batavia 24 Binghamton 7 8 27 31 Buffalo 16 31 32 33 34 36 S Carthage 8 Corning 25 30 Elmira 23 35 Garden City 32 Ithaca 13 Jamestown 5 New Rochelle S New York 7 11 24 27 34 36 S Norwood 23 Plattsburgh 14 36 Riverhead 29 Rochester 9 10 21 22 28 Saranac Lake 34 Schenectady 22 25 35 Smithtown 23 Springville 7 Syracuse 14 15 17 18 19 20 36 47 CFR 73 622 j enhanced display page 211 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Utica 29 30 34 Watertown 26 31 North Carolina Archer Lodge S Asheville 13 20 S Belmont 25 Burlington 26 Chapel Hill 20 Charlotte 9 18 19 23 24 Concord 21 Durham 9 14 Edenton 29 Fayetteville 22 Goldsboro 8 Greensboro 28 35 S Greenville 12 19 25 36 Hickory 14 High Point 31 Jacksonville 16 28 Kannapolis 32 Lexington S Linville 36 Lumberton 30 Manteo 13 New Bern 10 Raleigh 15 17 18 Roanoke Rapids 27 Rocky Mount 32 Wake Forest S Washington 34 Wilmington 21 23 24 29 Winston Salem 16 29 33 North Dakota Bismarck 12 17 22 26 31 Devils Lake 8 25 Dickinson 7 9 19 Ellendale 20 Fargo 13 19 21 36 Grand Forks 15 27
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Jamestown 7 47 CFR 73 622 j enhanced display page 212 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Minot 10 13 14 15 24 Pembina 12 Valley City 24 Williston 8 11 14 Ohio Akron 17 22 24 Alliance 29 Athens 32 Bowling Green 22 Cambridge 6 Canton S S Chillicothe 23 Cincinnati 12 17 18 20 26 Cleveland 8 15 19 35 36 Columbus 14 16 21 27 28 Dayton 31 33 34 35 36 Lima 4 8 London S Lorain S Mansfield 12 Oxford 29 Portsmouth 15 Sandusky 3 Shaker Heights 10 Springfield S Steubenville 9 Toledo 11 13 23 26 29 35 Youngstown 31 33 S Zanesville 30 Oklahoma Ada 17 Bartlesville 36 Cheyenne 8 Claremore 32 Eufaula 31 Lawton 11 Muskogee 20 Norman 16 Oklahoma City 7 13 15 18 19 23 24 25 27 33 Okmulgee 28 47 CFR 73 622 j enhanced display page 213 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Shawnee 29 Tulsa 8 10 11 12 16 22 26 34 Woodward 35 Oregon Bend 11 18 21 Coos Bay 22 34 Corvallis 7 Eugene 9 17 28 29 31 Grants Pass 30 Jacksonville 4 Klamath Falls 13 29 33 La Grande 13 16 Medford 5 8 12 16 26 Pendleton 11 Portland 10 21 24 25 26 32 Roseburg 18 19 36 Salem 22 33 Pennsylvania Allentown S S Altoona 6 24 31 Bethlehem 9 Clearfield 15 Erie 12 21 26 27 28 Greensburg 28 Harrisburg 10 32 36 Hazleton 22 Jeannette 11 Johnstown 8 35 Lancaster 8 S Philadelphia 6 17 28 30 31
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33 S Pittsburgh 4 16 20 21 23 25 27 Red Lion S Scranton 12 21 33 34 S Wilkes Barre 11 Williamsport 29 Willow Grove S York S Rhode Island Newport 17 Providence 2 7 12 25 47 CFR 73 622 j enhanced display page 214 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No South Carolina Allendale 21 Anderson 35 Beaufort 32 Charleston 17 19 20 24 25 34 Columbia 7 10 15 22 25 33 Conway 28 Florence 13 16 26 27 Greenville 2 8 17 30 Greenwood 26 Hardeeville 26 Myrtle Beach 32 36 Rock Hill 34 S Spartanburg 11 S Sumter 29 31 South Dakota Aberdeen 9 17 Brookings 8 Eagle Butte 13 Florence 3 Huron 12 Lead 5 10 Lowry 11 Martin 8 Mitchell 26 Pierre 10 19 Rapid City 2 7 16 21 26 Reliance 13 Sioux Falls 7 11 13 21 24 36 Vermillion 34 Tennessee Chattanooga 8 9 13 14 35 Cleveland 23 Cookeville 22 Crossville 31 Franklin 32 Greeneville 28 Hendersonville 33 Jackson 21 35 Jellico 18 47 CFR 73 622 j enhanced display page 215 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Johnson City 9 Kingsport 32 Knoxville 10 15 21 26 29 34 Lebanon 25 Lexington 27 Memphis 13 23 25 28 29 30 31 33 Murfreesboro 16 Nashville 7 10 20 21 27 30 36 Sneedville 24 Tazewell 36 Texas Abilene 15 29 30 Alvin 36 Amarillo 9 10 15 19 20 Arlington 25 Austin 7 21 22 23 33 34 Baytown 31 Beaumont 12 15 29 Belton 17 Big Spring 33 Blanco
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18 Borger 31 Bryan 24 College Station 16 29 Conroe 12 Corpus Christi 8 10 19 23 26 27 Dallas 8 14 21 27 32 35 36 Decatur 30 Del Rio 28 Denton 29 Eagle Pass 18 El Paso 13 15 16 17 18 20 21 25 Farwell 18 Fort Worth 9 18 19 24 Fredericksburg 8 Galveston 22 23 Garland 33 Greenville 23 Harlingen 16 18 21 Houston 8 11 13 19 21 24 26 34 35 47 CFR 73 622 j enhanced display page 216 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Irving 34 Jacksonville 22 Katy 25 Kerrville 32 Killeen 13 Lake Dallas 31 Laredo 8 19 Llano 27 Longview 20 S Lubbock 16 25 27 31 35 36 Lufkin 24 McAllen 17 Midland 18 26 Nacogdoches 15 Odessa 9 15 23 28 30 31 Port Arthur 27 Rio Grande 14 Rosenberg 30 San Angelo 11 16 19 San Antonio 9 12 15 16 24 28 29 30 Sherman 12 Snyder 17 Sweetwater 20 Temple 9 Texarkana 26 Tyler 7 Uvalde 26 Victoria 11 20 Waco 10 20 26 28 Weslaco 13 Wichita Falls 15 22 28 Wolfforth 23 Utah Cedar City 14 Logan 12 Ogden 24 35 36 Price 11 Provo 17 29 32 Richfield 19 Salt Lake City 19 20 23 27 28 30 34 47 CFR 73 622 j enhanced display page 217 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No St George 18 21 Vernal 16 Vermont Burlington 7 16 20 32 Montpelier S Rutland 10 St Johnsbury 28 Windsor S Virginia Arlington 15 Ashland 8 Bristol 35
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Charlottesville 2 26 32 Culpeper S Danville S Grundy 14 Hampton 35 Hampton Norfolk 31 Harrisonburg 20 Lynchburg 7 21 Manassas 35 New Market S Norfolk 16 32 33 Petersburg 28 Portsmouth 19 20 Richmond 10 22 23 24 29 Roanoke 13 27 30 34 36 Spotsylvania S Staunton 15 Virginia Beach 7 21 Washington Bellevue 24 33 Bellingham 14 19 Centralia 19 Everett 31 Kennewick 27 Pasco 18 Pullman 10 24 Richland 22 26 Seattle 9 16 23 25 30 36 47 CFR 73 622 j enhanced display page 218 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Spokane 7 13 15 20 28 34 36 Tacoma 11 13 21 27 34 Vancouver 30 Walla Walla 9 Yakima 14 16 21 33 West Virginia Bluefield 17 25 Charleston 18 24 29 Clarksburg 12 13 Grandview 8 Huntington 9 10 22 Lewisburg 11 Martinsburg 13 Morgantown 34 Oak Hill 31 Parkersburg 35 Weston 33 Wheeling 7 Wisconsin Antigo 19 Appleton 36 Chippewa Falls 21 Crandon 13 Eagle River 26 28 Eau Claire 17 25 Fond du Lac 5 Green Bay 14 18 22 23 25 Janesville 21 Kenosha 30 La Crosse 8 15 28 33 Madison 11 18 19 20 26 Mayville 34 Menomonie 27 Milwaukee 8 27 28 29 31 32 S S Park Falls 36 Racine S Rhinelander 16 Shawano 31 Superior 19 Suring 15 47 CFR 73 622 j enhanced display page 219 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 622 j Radio Broadcast Services Community Channel No Wausau 7 9 24 Wyoming Casper 8 12 14 17 20 Cheyenne 11 27 30 Jackson 11 Lander 7 8 Laramie 8
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Rawlins 9 Riverton 10 Rock Springs 13 Sheridan 7 13 Guam Hagåtña 8 12 Tamuning 14 Puerto Rico Aguada 25 Aguadilla 12 17 Arecibo 35 Bayamón S Caguas 11 24 Carolina 30 Fajardo 13 15 16 Guayama 34 Humacao 23 Mayagüez 20 29 31 32 Naranjito 18 Ponce 7 9 14 19 36 S San Juan 21 26 27 28 S San Sebastián 33 Toa Baja S Yauco S US Virgin Islands Charlotte Amalie 17 21 36 Christiansted 20 23 62 FR 26712 May 14 1997 Editorial Note For FEDERAL REGISTER citations affecting 73 622 see the List of CFR Sections Affected which appears in the Finding Aids section of the printed volume and at www govinfo gov 47 CFR 73 622 j enhanced display page 220 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 Radio Broadcast Services 73 623 DTV applications and changes to DTV allotments Link to an amendment published at 89 FR 7248 Feb 1 2024 a General This section contains the technical criteria for evaluating applications requesting DTV facilities that do not conform to the provisions of 73 622 and petitions for rulemaking to amend the DTV Table of Allotments 73 622 b Petitions to amend the DTV Table other than those also expressly requesting amendment of this section and applications for new DTV broadcast stations or for changes in authorized DTV stations filed pursuant to this section will not be accepted for filing if they fail to comply with the requirements of this section Petitions for rule making and applications seeking facilities that will operate after the end of the DTV transition must also comply with 73 616 b In considering petitions to amend the DTV Table and applications filed pursuant to this section the
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Commission will use geographic coordinates defined in 73 622 d as reference points in determining allotment separations and evaluating interference potential c Reserved 1 Requests filed pursuant to this paragraph must demonstrate compliance with the principal community coverage requirements of section 73 625 a 2 Requests filed pursuant to this paragraph c must demonstrate that the requested change would not result in more than an additional 2 percent the population served by another station being subject to interference provided however that no new interference may be caused to any station that already experiences interference to 10 percent or more of its population or that would result in a station receiving interference in excess of 10 percent of its population The station population values for existing NTSC service and DTV service contained in Appendix B of the Memorandum Opinion and Order on Reconsideration of the Sixth Report and Order in MM Docket No 87 268 FCC 98 24 adopted January 29 1998 referenced in 73 622 c are to be used for the purposes of determining whether a power increase or other change is permissible under this de minimis standard For evaluating compliance with this requirement interference to populations served is to be predicted based on the procedure set forth in OET Bulletin No 69 including population served within service areas determined in accordance with 73 622 e consideration of whether F 50 10 undesired signals will exceed the following desired to undesired D U signal ratios assumed use of a directional receiving antenna and use of the terrain dependent Longley Rice point to point propagation model Copies of OET Bulletin No 69 may be inspected during normal business hours at the Federal Communications Commission s Reference Information Center located at the address of the FCC s main office indicated in
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47 CFR 0 401 a These documents are also available through the Internet on the FCC Home Page at http www fcc gov The threshold levels at which interference is considered to occur are D U Ratio Co channel DTV into analog TV 34 Analog TV into DTV 2 DTV into DTV 15 First Adjacent Channel Lower DTV into analog TV 14 47 CFR 73 623 c 2 enhanced display page 221 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 c 3 Radio Broadcast Services D U Ratio Upper DTV into analog TV 17 Lower analog TV into DTV 48 Upper analog TV into DTV 49 Lower DTV into DTV 28 Upper DTV into DTV 26 Other Adjacent Channel Channels 14 69 only DTV into analog TV where N analog TV channel and DTV Channel N 2 24 N 2 28 N 3 30 N 3 34 N 4 34 N 4 25 N 7 35 N 7 43 N 8 32 N 8 43 N 14 33 N 15 31 3 The values in paragraph c 2 of this section for co channel interference to DTV service are only valid at locations where the signal to noise ratio is 28 dB or greater for interference from DTV and 25 dB or greater for interference from analog TV service At the edge of the noise limited service area where the signal to noise S N ratio is 16 dB these values are 21 dB and 23 dB for interference from analog TV and DTV respectively At locations where the S N ratio is greater than 16 dB but less than 28 dB D U values for co channel interference to DTV are as follows i For DTV to DTV interference
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the minimum D U ratios are computed from the following formula D U 15 10log10 1 0 1 0 10 x 10 Where x S N 15 19 minimum signal to noise ratio ii For analog to DTV interference the minimum D U ratios are found from the following Table for values between measured values linear interpolation can be used Signal to noise ratio dB Desired to undesired ratio dB 16 00 21 00 16 35 19 94 17 35 17 69 18 35 16 44 19 35 7 19 20 35 4 69 21 35 3 69 47 CFR 73 623 c 3 ii enhanced display page 222 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 c 4 Radio Broadcast Services Signal to noise ratio dB Desired to undesired ratio dB 22 35 2 94 23 35 2 44 25 00 2 00 4 Due to the frequency spacing that exists between Channels 4 and 5 between Channels 6 and 7 and between Channels 13 and 14 the minimum adjacent channel technical criteria specified in paragraph c 2 of this section shall not be applicable to these pairs of channels see 73 603 a 5 A DTV station application that proposes to expand the DTV station s allotted or authorized coverage area in any direction will not be accepted if it is predicted to cause interference to a Class A TV station or to a digital Class A TV station authorized pursuant to Subpart J of this part within the protected contour defined in 73 6010 of this part This paragraph applies to all DTV applications filed after May 1 2000 and to DTV applications filed between December 31 1999 and April 30 2000 unless the DTV station licensee
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or permittee notified the Commission of its intent to maximize by December 31 1999 i Interference is predicted to occur if the ratio in dB of the field strength of a Class A TV station at its protected contour to the field strength resulting from the facilities proposed in the DTV application calculated using the appropriate F 50 10 chart from Figure 9a 10a or 10c of 73 699 of this part fails to meet the D U signal ratios for DTV into analog TV specified in paragraph c 2 of this section ii Interference is predicted to occur if the ratio in dB of the field strength of a digital Class A TV station at its protected contour to the field strength resulting from the facilities proposed in the DTV application calculated using the appropriate F 50 10 chart from Figure 9a 10a or 10c of 73 699 of this part fails to meet the D U signal ratios for DTV into DTV specified in paragraphs c 2 and c 3 of this section iii In support of a request for waiver of the interference protection requirements of this section an applicant for a DTV broadcast station may make full use of terrain shielding and Longley Rice terrain dependent propagation methods to demonstrate that the proposed facility would not be likely to cause interference to Class A TV stations Guidance on using the Longely Rice methodology is provided in OET Bulletin No 69 which is available through the Internet at http www fcc gov oet info documents bulletins 69 d Minimum geographic spacing requirements for DTV allotments not included in the initial DTV Table of Allotments No petition to add a new channel to the DTV Table of Allotments or modify an allotment not included in the initial DTV
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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Table will be accepted unless it shows compliance with the requirements of this paragraph 1 Requests filed pursuant to this paragraph must demonstrate compliance with the principle community coverage requirements of section 73 625 a 2 Requests filed pursuant to this paragraph must meet the following requirements for geographic spacing with regard to all other DTV stations DTV allotments and analog TV stations Separation Channel relationship requirement VHF Channels 2 13 47 CFR 73 623 d 2 enhanced display page 223 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 d 2 Radio Broadcast Services Separation Channel relationship requirement Co channel DTV to DTV Zone I 244 6 km Zones II III 273 6 km Co channel DTV to analog TV Zone I 244 6 km Zone II III 273 6 km Adjacent Channel DTV to DTV No allotments permitted between Zone I 20 km and 110 km Zones II III 23 km and 110 km DTV to analog TV No allotments permitted between Zone I 9 km and 125 km Zone II III 11 km and 125 km UHF Channels Co channel DTV to DTV Zone I 196 3 km Zone II III 223 7 km Co channel DTV to analog TV Zone I 217 3 km Zone II III 244 6 km Adjacent Channel DTV to DTV No allotments permitted between All Zones 24 km and 110 km DTV to analog TV No allotments permitted between All Zones 12 km and 106 km Taboo Channels DTV to analog TV only DTV channels 2 3 4 7 8 and 14 No allotments or 15 channels above the analog TV channel permitted between Zone I 24 1 km and 47 CFR 73 623 d 2 enhanced display page 224 of 580
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 d 3 Radio Broadcast Services Separation Channel relationship requirement 80 5 km Zone II III 24 1 km and 96 6 km 3 Zones are defined in 73 609 The minimum distance separation between a DTV station in one zone and an analog TV or DTV station in another zone shall be that of the zone requiring the lower separation 4 Due to the frequency spacing that exists between Channels 4 and 5 between Channels 6 and 7 and between Channels 13 and 14 the minimum geographic spacing requirements specified in paragraph d 3 of this section shall not be applicable to these pairs of channels 73 603 a e Protection of land mobile operations on channels 14 20 The Commission will not accept petitions to amend the DTV Table of Allotments applications for new DTV stations or applications to change the channel or location of authorized DTV stations that would use channels 14 20 where the distance between the DTV reference point as defined in section 73 622 d would be located less than 250 km from the city center of a co channel land mobile operation or 176 km from the city center of an adjacent channel land mobile operation Petitions to amend the DTV Table applications for new DTV stations or requests to modify the DTV Table that do not meet the minimum DTV to land mobile spacing standards will however be considered where all affected land mobile licensees consent to the requested action Land mobile operations are authorized on these channels in the following markets City Channels Latitude Longitude Boston MA 14 16 42 21 24 71 03 25 Chicago IL 14 15 41 52 28 87 38 22 Cleveland
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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OH 14 15 41 29 51 2 81 41 49 5 Dallas TX 16 32 47 09 96 47 37 Detroit MI 15 16 42 19 48 1 83 02 56 7 Houston TX 17 29 45 26 95 21 37 Los Angeles CA 14 16 20 34 03 15 118 14 28 Miami FL 14 25 46 37 80 11 32 New York NY 14 15 16 40 45 06 73 59 39 Philadelphia PA 19 20 39 56 58 75 09 21 Pittsburgh PA 14 18 40 26 19 80 00 00 San Francisco CA 16 17 37 46 39 122 24 40 Washington DC 17 18 38 53 51 77 00 33 f Parties requesting new allotments on channel 6 be added to the DTV Table must submit an engineering study demonstrating that no interference would be caused to existing FM radio stations on FM channels 200 220 g Reserved h DTV application processing 47 CFR 73 623 h enhanced display page 225 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 h 1 Radio Broadcast Services 1 DTV applications for a construction permit or a modified construction permit pending as of January 18 2001 i Shall be afforded the interference protection set forth in paragraph c or d of this section as applicable A By all NTSC minor change applications B By NTSC new station applications except those covered by paragraphs h 1 ii G and h 1 iii D of this section C By all rulemaking petitions to amend the NTSC TV table of allotments D By DTV applications filed after January 18 2001 and E By rulemaking petitions to amend the DTV table of allotments filed after January 18 2001 ii Must demonstrate the requisite
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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interference protection set forth in paragraph c or d of this section as applicable to A DTV licensed stations B DTV construction permits C Existing DTV allotments D Rulemaking petitions to amend the DTV table of allotments for which a Notice of Proposed Rule Making has been released and the comment deadline specified therein has passed prior to the filing date of the DTV application E NTSC stations with licenses covering construction permits that were granted before the DTV application was filed F NTSC construction permits that were granted before the DTV application was filed G Applications for new NTSC television stations that were in groups of mutually exclusive applications on file prior to July 1 1997 regardless of whether they are the only applications that remain pending from their group iii That do not provide the requisite interference protection set forth in paragraph c or d of this section as applicable to the following applications and petitions will be deemed mutually exclusive with those applications and petitions A Other DTV applications pending as of January 18 2001 B Rulemaking petitions to amend the DTV table of allotments filed on or before January 18 2001 for which a Notice of Proposed Rule Making had been released and the comment deadline specified therein had not passed prior to the filing date of the DTV application C Rulemaking petitions to amend the DTV table of allotments filed on or before January 18 2001 for which a Notice of Proposed Rule Making had not been released and D Applications for new NTSC stations that are not covered by paragraph h 1 ii G of this section and were filed and accepted for filing on or before January 18 2001 that 1 Were filed by post auction winners pursuant to 73 5005 47 CFR
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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73 623 h 1 iii D 1 enhanced display page 226 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 h 1 iii D 2 Radio Broadcast Services 2 Are part of a settlement agreement on file with the Commission that would result in the grant of the NTSC application or 3 Are cut off singletons 2 DTV applications for a construction permit or a modified construction permit filed after January 18 2001 i Shall be afforded the interference protection set forth in paragraph c or d of this section as applicable A By all NTSC minor change applications B By NTSC new station applications except those covered by paragraph h 2 ii H and I of this section C By all rulemaking petitions to amend the NTSC TV table of allotments except those filed by NTSC applicants in those groups defined in h 2 ii I of this section for which a Notice of Proposed Rule Making has been released and the comment deadline specified therein has passed prior to the filing date of the DTV application D By later filed DTV applications and E By later filed rulemaking petitions to amend the DTV table of allotments ii Must demonstrate the requisite interference protection set forth in paragraph c or d of this section as applicable to A DTV licensed stations B DTV construction permits C Earlier filed DTV applications D Existing DTV allotments E Rulemaking petitions to amend the DTV table of allotments for which a Notice of Proposed Rule Making has been released and the comment deadline specified therein has passed prior to the filing date of the DTV application F NTSC stations with licenses covering construction permits that were granted before the DTV application was filed G
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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NTSC construction permits that were granted before the DTV application was filed and H Earlier filed and accepted for filing applications for new NTSC stations that are not covered by paragraph h 2 ii I of this section and that 1 Were filed by post auction winners pursuant to 73 5005 2 Are part of a settlement agreement on file with the Commission that would result in the grant of the NTSC application or 3 Are cut off singletons I Applications for new NTSC television stations that were in groups of mutually exclusive applications on file prior to July 1 1997 regardless of whether they are the only applications that remain pending from their group 47 CFR 73 623 h 2 ii I enhanced display page 227 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 623 h 2 ii J Radio Broadcast Services J Rulemaking petitions to amend the NTSC table of allotments filed by applicants defined in h 2 ii I of this section for which a Notice of Proposed Rule Making has been released and the comment deadline specified therein has passed prior to the filing of the DTV application iii That do not provide the requisite interference protection set forth in paragraph c or d of this section as applicable to the following applications and petitions will be deemed mutually exclusive with those applications and petitions A Other DTV applications filed the same day B Rulemaking petitions to amend the DTV table of allotments for which a Notice of Proposed Rule Making had been released and the comment deadline specified therein had not passed prior to the filing date of the DTV application and C Earlier filed rulemaking petitions to amend the DTV table of allotments for which
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a Notice of Proposed Rule Making had not been released 3 DTV applicants DTV applicants and NTSC applicants or DTV applicants and DTV rulemaking petitioners that are mutually exclusive pursuant to this section will be notified by Public Notice and provided with a 90 day period of time to resolve their mutual exclusivity via engineering amendment or settlement Those applications and petitions that remain mutually exclusive upon conclusion of the 90 day settlement period will be dismissed 62 FR 26719 May 14 1997 as amended at 63 FR 13560 Mar 20 1998 64 FR 4327 Jan 28 1999 65 FR 30002 May 10 2000 65 FR 58467 Sept 29 2000 66 FR 9984 Feb 13 2001 66 FR 65134 Dec 18 2001 69 FR 31906 June 8 2004 73 FR 5683 Jan 30 2008 85 FR 64408 Oct 13 2020 86 FR 66209 Nov 22 2021 73 624 Digital television broadcast stations Link to an amendment published at 89 FR 7249 Feb 1 2024 a Digital television DTV broadcast stations are assigned channels 6 MHz wide Initial eligibility for licenses for DTV broadcast stations is limited to persons that as of April 3 1997 are licensed to operate a full power television broadcast station or hold a permit to construct such a station or both b DTV broadcast station permittees or licensees must transmit at least one over the air video program signal at no direct charge to viewers on the DTV channel Until such time as a DTV station permittee or licensee ceases analog transmissions and returns that spectrum to the Commission and except as provided in paragraph b 1 of this section at any time that a DTV broadcast station permittee or licensee transmits a video program signal on its analog television channel it must also transmit at
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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least one over the air video program signal on the DTV channel The DTV service that is provided pursuant to this paragraph b must have a resolution of at least 480i vertical resolution of 480 lines interlaced 1 DTV broadcast station permittees and licensees required to construct and operate a DTV station by May 1 2002 or May 1 2003 pursuant to paragraph d of this section must at a minimum beginning on the date on which the DTV station is required to be constructed provide a digital video program signal of the quality described in paragraph b of this section during prime time hours as defined in 79 3 a 6 of this chapter These licensees and permittees must also comply with the minimum operating hours requirements in paragraph f of this section 47 CFR 73 624 b 1 enhanced display page 228 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 624 b 2 Radio Broadcast Services 2 DTV licensees or permittees that choose to commence digital operation before the construction deadline set forth in paragraph d of this section are not subject to any minimum schedule for operation on the DTV channel 3 DTV licensees or permittees that choose to broadcast an ATSC 3 0 signal using the Next Gen TV transmission standard in 73 682 f shall transmit at least one free over the air video programming stream on that signal that requires at most the signal threshold of a comparable received DTV signal DTV licensees or permittees that choose to broadcast an ATSC 3 0 signal using the Next Gen TV transmission standard in 73 682 f shall also simulcast the primary video programming stream on its ATSC 3 0 signal by broadcasting an ATSC 1 0
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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signal using the DTV transmission standard in 73 682 d from another broadcast television facility within its local market in accordance with the local simulcasting requirement in 73 3801 73 6029 and 74 782 of this chapter c Provided that DTV broadcast stations comply with paragraph b of this section DTV broadcast stations are permitted to offer services of any nature consistent with the public interest convenience and necessity on an ancillary or supplementary basis The kinds of services that may be provided include but are not limited to computer software distribution data transmissions teletext interactive materials aural messages paging services audio signals subscription video and any other services that do not derogate DTV broadcast stations obligations under paragraph b of this section Such services may be provided on a broadcast point to point or point to multipoint basis provided however that any video broadcast signal provided at no direct charge to viewers shall not be considered ancillary or supplementary 1 DTV licensees that provide ancillary or supplementary services that are analogous to other services subject to regulation by the Commission must comply with the Commission regulations that apply to those services provided however that no ancillary or supplementary service shall have any rights to carriage under 614 or 615 of the Communications Act of 1934 as amended or be deemed a multichannel video programming distributor for purposes of section 628 of the Communications Act of 1934 as amended 2 In all arrangements entered into with outside parties affecting service operation the DTV licensee or permittee must retain control over all material transmitted in a broadcast mode via the station s facilities with the right to reject any material in the sole judgement of the permitte or licensee The license or permittee is also responsible for all aspects of technical
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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operation involving such telecommunications services 3 In any application for renewal of a broadcast license for a television station that provides ancillary or supplementary services a licensee shall establish that all of its program services on the analog and the DTV spectrum are in the public interest Any violation of the Commission s rules applicable to ancillary or supplementary services will reflect on the licensee s qualifications for renewal of its license d Digital television broadcast facilities that comply with the FCC DTV Standard section 73 682 d shall be constructed in the following markets by the following dates 1 i May 1 1999 all network affiliated television stations in the top ten television markets ii November 1 1999 all network affiliated television stations not included in category 1 i and in the top 30 television markets 47 CFR 73 624 d 1 ii enhanced display page 229 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 624 d 1 iii Radio Broadcast Services iii May 1 2002 all remaining commercial television stations iv May 1 2003 all noncommercial television stations v May 18 2008 in all markets for completion of construction of post transition DTV facilities for all commercial and noncommercial television stations that will use the same channel used for pre transition operation for post transition operation and that as of December 31 2007 have a construction permit for facilities that conform to the facilities defined by the new DTV Table of Allotments and accompanying Appendix B established by the Seventh Report and Order in MB Docket No 87 268 and codified at 47 CFR 73 622 i vi August 18 2008 in all markets for completion of construction of post transition DTV facilities for all commercial and noncommercial television
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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stations that will use the same channel used for pre transition operation for post transition operation but which as of December 31 2007 do not have a construction permit for facilities that conform to the facilities defined by the new DTV Table of Allotments and accompanying Appendix B established by the Seventh Report and Order in MB Docket No 87 268 and codified at 47 CFR 73 622 i vii June 12 2009 in all markets for completion of construction of post transition DTV facilities for all commercial and noncommercial television stations whose post transition digital channel is different from their pre transition digital channel and for those stations whose post transition channel is the same as their pre transition channel but that are subject to a unique technical challenge that has been specifically recognized as such by the Commission 2 For the purposes of paragraph d 1 i The term network is defined to include the ABC CBS NBC and Fox television networks ii The term television market is defined as the Designated Market Area or DMA as defined by Nielsen Media Research as of April 3 1997 and iii The terms network affiliated or network affiliate are defined to include those television stations affiliated with at least one of the four networks designated in paragraph d 2 i as of April 3 1997 In those DMAs in which a network has more than one network affiliate paragraphs d 1 i and ii of this section shall apply to its network affiliate with the largest audience share for the 9 a m to midnight time period as measured by Nielsen Media Research in its Nielsen Station Index Viewers in Profile as of February 1997 3 Authority delegated i Authority is delegated to the Chief Media Bureau to grant an
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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extension of time of up to six months beyond the relevant construction deadline specified in paragraph d 1 of this section upon demonstration by the DTV licensee or permittee that failure to meet that construction deadline is due to circumstances that are either unforeseeable or beyond the licensee s control where the licensee has taken all reasonable steps to resolve the problem expeditiously ii For construction deadlines occurring prior to June 13 2009 the following circumstances may include but shall not be limited to A Inability to construct and place in operation a facility necessary for transmitting digital television such as a tower because of delays in obtaining zoning or FAA approvals or similar constraints or 47 CFR 73 624 d 3 ii A enhanced display page 230 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 624 d 3 ii B Radio Broadcast Services B Where the licensee or permittee is currently the subject of a bankruptcy or receivership proceeding or is experiencing severe financial hardship as defined by negative cash flow for the past three years iii For construction deadlines occurring after June 12 2009 the tolling provisions of 73 3598 shall apply iv The Bureau may grant no more than two extension requests upon delegated authority Subsequent extension requests shall be referred to the Commission The Bureau may deny extension requests upon delegated authority v Applications for extension of time shall be filed no earlier than 90 and no later than 60 days prior to the relevant construction deadline absent a showing of sufficient reasons for filing within less than 60 days of the relevant construction deadline e The application for construction permit must be filed on Form 301 except for noncommercial stations which must file on Form 340
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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on or before the date on which half of the construction period has elapsed Thus for example for applicants in category d 1 i the application for construction period must be filed by May 1 1998 f 1 Commencing on April 1 2003 DTV television licensees and permittees required to construct and operate a DTV station by May 1 2002 or May 1 2003 must transmit at least one over the air video program signal at no direct charge to viewers on their DTV channel at least 50 percent of the time they are transmitting a video program signal on their analog channel 2 Commencing on April 1 2004 DTV licensees and permittees described in paragraph f 1 of this section must transmit a video program signal as described in paragraph f 1 of this section on the DTV channel at least 75 percent of the time they are transmitting a video program signal on the analog channel 3 Commencing on April 1 2005 DTV licensees and permittees described in paragraph f 1 of this section must transmit a video program signal as described in paragraph f 1 of this section on the DTV channel at least 100 percent of the time they are transmitting a video program signal on the analog channel 4 The minimum operating hours requirements imposed in paragraphs f 1 through 3 of this section will terminate when the analog channel terminates operation and a 6 MHz channel is returned by the DTV licensee or permittee to the Commission g Commercial DTV licensees and permittees and low power television TV translator and Class A television stations DTV licensees and permittees must annually remit a fee of 5 percent of the gross revenues derived from all ancillary and supplementary services as defined by paragraph b of this
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corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt
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section which are feeable as defined in paragraphs g 1 i and ii of this section Noncommercial DTV licensees and permittees must annually remit a fee of 5 percent of the gross revenues derived from all ancillary and supplementary services as defined by paragraph b of this section which are feeable as defined in paragraphs g 1 i and ii of this section except that such licensees and permittees must annually remit a fee of 2 5 percent of the gross revenues from such ancillary or supplementary services which are nonprofit noncommercial and educational 1 47 CFR 73 624 g 1 enhanced display page 231 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 624 g 1 i Radio Broadcast Services i All ancillary or supplementary services for which payment of a subscription fee or charge is required in order to receive the service are feeable The fee required by this provision shall be imposed on any and all revenues from such services including revenues derived from subscription fees and from any commercial advertisements transmitted on the service ii Any ancillary or supplementary service for which no payment is required from consumers in order to receive the service is feeable if the DTV licensee directly or indirectly receives compensation from a third party in return for the transmission of material provided by that third party other than commercial advertisements used to support broadcasting for which a subscription fee is not required The fee required by this provision shall be imposed on any and all revenues from such services other than revenues received from a third party in return for the transmission of commercial advertisements used to support broadcasting for which a subscription fee is not required 2 Payment of fees i Each
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