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December 1 all commercial and noncommercial DTV licensees and permittees that provided feeable ancillary or supplementary services as defined in this section at any point during the 12 month period ending on the preceding September 30 will electronically report for the applicable period A A brief description of the fee... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
2004 73 FR 5683 Jan 30 2008 74 FR 8878 Feb 27 2009 76 FR 44827 July 27 2011 83 FR 5022 Feb 2 2018 83 FR 19460 May 3 2018 86 FR 10856 Feb 23 2021 73 625 DTV coverage of principal community and antenna system Link to an amendment published at 89 FR 7250 Feb 1 2024 47 CFR 73 625 enhanced display page 232 of 580 47 CFR Par... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
50 50 field strength charts Figures 9 10 and 10b of 73 699 of this part and the F 50 10 field strength charts Figures 9a 10a and 10c of 73 699 of this part shall be used To use the charts to predict the distance to a given F 50 90 contour the following procedure is used Convert the effective radiated power in kilowatts... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
to determine the F 50 10 contour value in dBu Subtract the F 50 50 contour value in dBu from this F 50 10 contour value in dBu Subtract this difference from the F 50 50 contour value in dBu to determine the F 50 90 contour value in dBu at the pertinent distance along the pertinent radial 2 The effective radiated power ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
as to the location of their stations or proposed stations contour This showing is to include a map showing this contour except where applicants have previously submitted material to the FCC containing such information and it is found upon careful examination that the contour locations indicated therein would not change... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
area within the United States beyond the 16 1 kilometers 10 mile portion of the radial the entire 3 2 16 1 kilometers 2 10 mile portion of the radial shall be included in the computation of antenna height above average terrain However where the contour does not so encompass United States land area and 1 the entire 3 2 ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
on the topographic map see paragraph b 5 of this section should be used although only relatively few points may be available The profile graphs should indicate the topography accurately for each radial and the graphs should be plotted with the distance in kilometers as the abscissa and the elevation in meters above mea... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
coverage 5 In the preparation of the profile graph previously described and in determining the location and height above sea level of the antenna site the elevation or contour intervals shall be taken from the United States Geological Survey Topographic Quadrangle Maps United States Army Corps of Engineers maps or Tenn... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
vertical plane may not exceed the effective radiated power in either the horizontal direction or below the horizontal whichever is greater 2 An antenna designed or altered to produce a noncircular radiation pattern in the horizontal plane is considered to be a directional antenna Antennas purposely installed in such a ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
be included to indicate clearly the radiation characteristics of the antenna above and below the horizontal plane In cases where the angles at which the maximum vertical radiation varies with azimuth a separate vertical radiation pattern must be provided for each pertinent radial direction v All horizontal plane patter... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
with complete engineering data should be submitted An application may be required for other classes of stations when the tower is to be used in connection with a DTV station ii When the proposed DTV antenna is to be mounted on a tower in the vicinity of an AM station directional antenna system and it appears that the o... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
addition a tabulation of the relative fields representing the effective radiation pattern toward the radio horizon in the 36 radial directions must be submitted A value of 1 0 should be used for the maximum radiation 62 FR 26990 May 16 1997 as amended at 63 FR 13562 Mar 20 1998 66 FR 9985 Feb 13 2001 66 FR 65135 Dec 18... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
50 50 field strength F 50 10 F 50 10 dBu km km dBu km dBu 2 6 1 28 108 132 28 183 18 8 2 6 2 and 3 28 128 158 28 209 18 8 7 13 1 36 101 121 33 182 23 8 7 13 2 and 3 36 123 149 33 208 23 8 14 36 1 2 and 3 41 103 142 36 246 26 8 47 CFR 73 626 c enhanced display page 238 of 580 47 CFR Part 73 up to date as of 2 20 2024 47... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Only population that is predicted to receive service by the method described in 73 622 e 2 from at least one individual DTS transmitter will be considered f Applications for DTS An application proposing use of a DTS will not be accepted for filing unless it meets all of the following conditions 1 The combined coverage ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
level at a given location is equal to the square root of the sum of the squared field strengths from each transmitter in the DTS network at that location 6 Each DTS transmitter must be located within either the DTV station s Table of Distances area or its authorized service area 47 CFR 73 626 f 6 enhanced display page ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
letter to be entitled Notice of Commencement of STV Operations the licensee or permittee is to state that it will comply with the provisions of paragraphs e 1 through e 3 and 73 644 c of this chapter and identify the make and type of encoding system to be used A similar notice must be submitted if the licensee or permi... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
that in its opinion is of greater local or national importance or 2 Delegates to any other person the right to schedule the hours of transmission of subscription programs However this rule does not prevent a licensee or permittee from entering into an agreement or arrangement whereby it agrees to schedule a specific su... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
rules and policies applicable to regular TV broadcast stations are applicable to subscription TV operations except where specifically exempted in the provisions of those rules and policies 48 FR 56392 Dec 21 1983 73 644 Subscription TV transmission systems Link to an amendment published at 89 FR 7251 Feb 1 2024 a Licen... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
devices must meet the provisions where required of subpart H of part 15 of the FCC Rules for TV Interface Devices c Prior to commencing the transmission of encoded subscription programming the licensee or permittee of a TV broadcast or low power TV station must perform such tests and measurements to determine that the ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
no modifications on a subscription encoding system that would alter the characteristics of the transmitted aural or visual signal from those specified in the application for advance approval A licensee or permittee of a station replacing its encoding system must perform the measurements required by paragraph c of this ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
signal include the transmission of data processed information or any other communication in either a digital or analog mode b Telecommunications service on the VBI and in the visual signal is of an ancillary nature and as such is an elective subsidiary activity No service guidelines limitations or performance standards... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
and visual telecommunications service signals during any time period including portions of the day when normal programming is not broadcast Such transmissions must be in accordance with the technical provisions of 73 682 50 FR 4663 Feb 1 1985 as amended at 50 FR 9035 Mar 6 1985 61 FR 36304 July 10 1996 47 CFR 73 646 f ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
to prohibit any contract arrangement or understanding between a station and a network organization pursuant to which the station is granted the first call in its community upon the programs of the network organization As employed in this paragraph the term community is defined as the community specified in the instrume... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
g Dual network operation A television broadcast station may affiliate with a person or entity that maintains two or more networks of television broadcast stations unless such dual or multiple networks are composed of two or more persons or entities that on February 8 1996 were networks as defined in 73 3613 a 1 of the ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
main post office will be used from broadcasting any program purchased by the former station from such non network program producer distributor supplier or other person except that a television station may secure exclusivity against a television station licensed to another designated community in a hyphenated market spe... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
up to date as of 2 20 2024 47 CFR 73 659 73 663 Radio Broadcast Services Note 2 It is intended that the top 100 major television markets listed in 76 51 of this chapter shall be used for the purposes of this rule and that the listing of the top 100 television markets appearing in the ARB Television Market Analysis shal... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Finding Aids section of the printed volume and at www govinfo gov 73 659 73 663 Reserved 73 664 Determining operating power Link to an amendment published at 89 FR 7251 Feb 1 2024 a The operating power of each TV visual transmitter shall normally be determined by the direct method b Direct method visual transmitter The... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
output power such devices must permit determination of this power to within an accuracy of 5 of the power indicated by the full scale reading of the electrical indicating instrument of the device If temperature and coolant flow indicating devices are used to determine the power output such devices must permit determina... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
transmitter The operating power is determined by the indirect method by applying an appropriate factor to the input power to the final radio frequency amplifier stage of the transmitter using the following formula Transmitter output power Ep Ip F Where Ep DC input voltage of the final radio frequency amplifier stage Ip... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
at the authorized carrier frequency and transmitter output power iii Using the transmitter manufacturer s measurement data submitted to the FCC for type acceptance as shown in the instruction book supplied to the licensee Note Refer to 73 1560 for aural transmitter output power levels 44 FR 58732 Oct 11 1979 as amended... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
baseband signal but do not include services which enhance the main program broadcast service or exclusively relate to station operations see 73 665 a b and c Subsidiary communications include but are not limited to services such as functional music specialized foreign language programs radio reading services utility lo... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
mode via the station s facilities with the right to reject any material that it deems inappropriate or undesirable 49 FR 18105 Apr 27 1984 as amended at 49 FR 27147 July 2 1984 56 FR 49707 Oct 1 1991 73 669 TV stereophonic aural and multiplex subcarrier operation Link to an amendment published at 89 FR 7252 Feb 1 2024 ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Web site addresses during program material or promotional material not counted as commercial time is permitted only if the Web site 1 Offers a substantial amount of bona fide program related or other noncommercial content 2 Is not primarily intended for commercial purposes including either e commerce or advertising 3 T... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
matter means air time sold for purposes of selling a product or service and promotions of television programs or video programming services other than children s or other age appropriate programming appearing on the same channel or promotions for children s educational and informational programming on any channel Note ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the following additional criteria 1 It has serving the educational and informational needs of children ages 16 and under as a significant purpose 2 It is aired between the hours of 6 00 a m and 10 00 p m 3 It is a regularly scheduled weekly program except that a licensee may air a limited amount of programming that is ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
week of Core Programming as defined in paragraph c of this section and as averaged over a six month period or a total of 156 hours of Core Programming annually including at least 26 hours per quarter of regularly scheduled weekly programming and up to 52 hours annually of Core Programming of at least 30 minutes in leng... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
and or on special non broadcast efforts which enhance the value of children s educational and informational television programming e A station that preempts an episode of a regularly scheduled weekly Core Program will be permitted to count the episode toward the processing guidelines set forth in paragraph d of this se... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
schedule change during the same time slot as the preempted episode If a station intends to air the rescheduled episode within the seven days before the date the episode was originally scheduled to air the station must make the on air notification during the same timeslot as the preceding week s episode of that program ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
children Each commercial television broadcast station licensee shall provide information identifying programming specifically designed to educate and inform children to publishers of program guides 70 FR 9877 Mar 1 2005 as amended at 84 FR 41935 Aug 16 2019 73 681 Definitions Link to an amendment published at 89 FR 725... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
one kW antenna input power to 221 4 mV m This ratio should be expressed in decibels dB If specified for a particular direction antenna power gain is based on the field strength in that direction only Aspect ratio The ratio of picture width to picture height as transmitted Aural center frequency 1 The average frequency ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
reproduced with different values of hue saturation and luminance Effective radiated power The product of the antenna input power and the antenna power gain This product should be expressed in kW and in dB above 1 kW dBk If specified for a particular direction effective radiated power is based on the antenna power gain ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
of modulation where the instantaneous radio frequency varies in proportion to the instantaneous amplitude of the modulating signal amplitude of modulating signal to be measured after pre emphasis if used and the instantaneous radio frequency is independent of the frequency of the modulating signal 47 CFR 73 681 Frequen... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
operation between 15 kHz and 120 kHz to convey information or that encodes digital information in the video portion of the television signal that is intended to be decoded as audio information Multiplex Transmission Aural A subchannel added to the regular aural carrier of a television broadcast station by means of freq... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
highlights shadows and half tones determined by the process of scanning Standard television signal A signal which conforms to the television transmission standards Synchronization The maintenance of one operation in step with another Television broadcast band The frequencies in the band extending from 54 to 608 megaher... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Feb 1 2024 a Transmission standards 1 The width of the television broadcast channel shall be 6 MHz 2 The visual carrier frequency shall be nominally 1 25 MHz above the lower boundary of the channel 3 The aural center frequency shall be 4 5 MHz higher than the visual carrier frequency 47 CFR 73 682 a 3 enhanced display ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
8 During active scanning intervals the scene shall be scanned from left to right horizontally and from top to bottom vertically at uniform velocities 9 A carrier shall be modulated within a single television channel for both picture and synchronizing signals The two signals comprise different modulation ranges in ampli... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
antennas the licensed effective radiated power of the vertically polarized component may not exceed the licensed effective 47 CFR 73 682 a 14 enhanced display page 257 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 682 a 15 Radio Broadcast Services radiated power of the horizontally polarized component For ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
and a simultaneous pair of chrominance components transmitted as the amplitude modulation sidebands of a pair of suppressed subcarriers in quadrature 20 Equation of complete color signal i The color picture signal has the following composition EM EY EQ sin ωt 33 EI cos ωt 33 Where EQ 0 41 EB EY 0 48 ER EY EI 0 27 EB EY... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
in i represents the chrominance subcarrier signal which carries the chrominance information The phase reference in the EM equation in i is the phase of the burst 180 as shown in Figure 8 of 73 699 The burst corresponds to amplitude modulation of a continuous sine wave iii The equivalent bandwidth assigned prior to modu... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
assume that this condition will be reproduced as CIE Illuminant C x 0 310 y 0 316 vi EY EQ EI and the components of these signals shall match each other in time to 0 05 µsecs vii The angles of the subcarrier measured with respect to the burst phase when reproducing saturated primaries and their complements at 75 percen... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
synchronizing area In no case may the modulation excursions produced by test signals extend beyond peak of sync or to zero carrier level ii The use of such signals shall not result in significant degradation of the program transmission of the television broadcast station nor produce emission outside of the frequency ba... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
this chapter and may be transmitted during all periods of regular operation On a space available basis line 21 field 2 may also be used for text mode data and extended data service information Note The signals on Fields 1 and 2 shall be distinct data streams for example to supply captions in different languages or at d... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
pursuant to 73 1250 must take precedence over and shall be cause for interrupting a service such as teletext that provides a visual depiction of information simultaneously transmitted on the aural channel v A reference pulse for a decoder associated adaptive equalizer filter designed to improve the decoding of telecomm... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
for the transmitting system and iii A station may only use systems for inserting non video information that have been approved in advance by the Commission The criteria for advance approval of systems are as follows A The use of such signals shall not result in significant degradation to any portion of the visual aural... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
frequency of the baseband stereophonic subcarrier must at all times be within the range 15 kHz to 120 kHz Either amplitude or frequency modulation of the stereophonic subcarrier may be used 47 CFR 73 682 c 2 enhanced display page 262 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 682 c 3 Radio Broadcast Ser... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
aural carrier must not exceed 75 kHz d Digital broadcast television transmission standard Effective October 11 2011 transmission of digital broadcast television DTV signals shall comply with the standards for such transmissions set forth in ATSC A 52 ATSC Standard Digital Audio Compression AC 3 ATSC A 53 Parts 1 4 and ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
reference see 73 8000 insofar as it concerns the transmission of commercial advertisements 2 Commercials inserted by station A television broadcast station that installs utilizes and maintains in a commercially reasonable manner the equipment and associated software to comply with ATSC A 85 RP shall be deemed in compli... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
commercial advertisements placed into the programming stream by a third party i e programmer and passed through by the station to viewers a television broadcast station must certify that its own transmission equipment is not at fault for any pattern or trend of complaints and may demonstrate compliance with the ATSC A ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
2011 need not perform annual spot checks but must perform a spot check as defined in 73 682 e 3 iv A B D and E on programming in response to an enforcement inquiry concerning a pattern or trend of complaints regarding commercials contained in that programming 47 CFR 73 682 e 3 iii enhanced display page 264 of 580 47 CF... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
totaling no fewer than 24 hours that measure at least one program in its entirety provided by each non certified programmer that supplies programming for that program stream 3 If annual spot checks are performed for two consecutive years without finding evidence of noncompliance with the ATSC A 85 RP no further annual ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
682 e 3 iv D 2 enhanced display page 265 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 682 e 3 iv E Radio Broadcast Services E If any spot check shows noncompliance with the ATSC A 85 RP the television station must notify the Commission and the network or programmer within 7 days direct the programmer s at... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
periodic maintenance and testing to ensure its continued proper operation ii Certifies that it either has no actual knowledge of a violation of the ATSC A 85 RP or that any violation of which it has become aware has been corrected promptly upon becoming aware of such a violation and iii Certifies that its own transmiss... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 682 f Radio Broadcast Services compliance with ATSC A 85 RP with regard to the commercial advertisements that are the subject of the inquiry and certifying that its own transmission equipment is not at fault for any such pattern or trend of complaints f Next Gen TV br... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
1 to 73 682 For additional information regarding this requirement see Implementation of the Commercial Advertisement Loudness Mitigation CALM Act FCC 11 182 Secs 4 5 303 48 Stat as amended 1066 1068 1082 47 U S C 154 155 303 28 FR 13660 Dec 14 1963 Editorial Note For FEDERAL REGISTER citations affecting 73 682 see the ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Channels 14 69 should decrease more rapidly with distance beyond the horizon than for Channels 2 6 and modification of the curves for Channels 14 69 may be expected as a result of measurements to be made at a later date For these reasons the curves should be used with appreciation of their limitations in estimating lev... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
TV and TV translator stations that operate under part 74 of this chapter Guidance for use of the ILLR model in predicting the field strength of digital television signals for such determinations is provided in OET Bulletin No 73 stations operating with digital signals include all full service stations and some Class A ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
C 338 from such carrier The definitions of satellite carrier subscriber and local market contained in 47 CFR 76 66 a apply to this paragraph f 44 FR 36039 June 20 1979 as amended at 47 FR 35990 Aug 18 1982 50 FR 23699 June 5 1985 50 FR 32416 Aug 12 1985 65 FR 36641 June 9 2000 70 FR 21670 Apr 27 2005 75 FR 80363 Dec 22... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
for the appropriate azimuth into decibel value referenced to 1 kW dBu If necessary convert the selected contour to the decibel value dBu above 1 microvolt per meter 1 uV m Subtract the power value in dBk from the contour value in dBu Note that for power less than 1 kW the difference value will be greater than the conto... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Radio Broadcast Services Where A is the depression angle in degrees H is the height in meters of the transmitting antenna radiation center above average terrain of the 3 2 16 1 kilometers 2 10 miles sector of the pertinent radial This formula is empirically derived for the limited purpose specified here Its use for any... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
2 16 1 kilometers 2 10 miles from the antenna site are employed Profile graphs shall be drawn for 8 radials beginning at the antenna site and extending 16 1 kilometers 10 miles therefrom The radials should be drawn for each 45 degrees of azimuth starting with the True North At least one radial must include the principa... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
part of the radial extending from the 3 2 kilometer 2 mile sector to the outermost portion of land area within the United States covered by the radial shall be 47 CFR 73 684 d 2 enhanced display page 270 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 684 e Radio Broadcast Services employed in the computatio... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
care of in the charts showing signal strengths The average elevation of the 12 9 kilometer 8 miles distance between 3 2 16 1 kilometers 2 10 miles from the antenna site should then be determined from the profile graph for each radial This may be obtained by averaging a large number of equally spaced points by using a p... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
by other means Such supplemental showing should describe the procedure employed and should include sample calculations Maps of predicted coverage should include both the coverage as predicted by the regular method and as predicted by a supplemental method When measurements of area are required these should include the ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
from road maps may be used where no better information is available In cases where limited topographic data is available use may be made of an altimeter in a car driven along roads extending generally radially from the transmitter site Ordinarily the Commission will not require the submission of topographical maps for ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
of the length of the profile segment see 73 699 Fig 10d i If the lowest field strength value of interest is initially predicted to occur over a particular propagation path at a distance which is less than 49 9 kilometers 31 miles from the transmitter the terrain profile segment used in the determination of the terrain ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
roughness correction may be computed using the following formula ΔF C 0 03 Δh 1 f 300 Where ΔF terrain roughness correction in dB C a constant having a specific value for use with each set of field strength charts 1 9 for TV Channels 2 6 2 5 for TV Channels 7 13 4 8 for TV Channels 14 69 Δh terrain roughness factor in ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
a low antenna with increased transmitter power The location should be so chosen that line of sight can be obtained from the antenna over the principal community to be served in no event should there be a major obstruction in this path The antenna must be constructed so that it is 47 CFR 73 685 b enhanced display page 2... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
which the reception of other stations is subject to interference due to the strong signal from this station The authorization of station construction in areas where blanketing is found to be excessive will be on the basis that the applicant will assume full responsibility for the adjustment of reasonable complaints ari... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
should be oriented so that 0 corresponds to true North Where mechanical beam tilt is intended the amount of tilt in degrees of the antenna vertical axis and the orientation of the downward tilt with respect to true North must be specified and the horizontal plane pattern must reflect the use of mechanical beam tilt 3 A... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
that are required are the patterns for the complete directional antenna system In the case of a composite antenna composed of two or more individual antennas this means that the patterns for the composite antenna not the patterns for each of the individual antennas must be submitted g Applications proposing the use of ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
purpose of showing that the technical standards contained in this subpart do not properly reflect the levels of any given type of interference or propagation effect may do so only in appropriate rulemaking proceedings concerning the amendment of such technical standards Persons making field strength measurements for fo... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
3 2 kilometer 2 mile marker are selected These intersections are the points on the radial at which measurements are to be made and are referred to subsequently as measuring locations The elevation of each measuring location should approach the elevation at the corresponding 3 2 kilometer 2 mile marker as nearly as poss... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
from the transmitter after the mobile run prescribed in paragraph b 2 v of this section is concluded additional measurements shall be made in a cluster of at least five fixed points At each such point the field strengths with the antenna oriented toward the transmitter and with the antenna oriented so as to receive the... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
reduced in size for convenient submission to the Commission but not to the extent that important detail is lost The original maps shall be made available if requested If a large number of maps is involved an index map should be submitted iii All information necessary to determine the pertinent characteristics of the tr... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
at which measurements are to be made shall be at least 15 and shall be approximately equal to 0 1 P 1 2 if this product is a number greater than 15 iii A rectangular grid of such size and shape as to encompass the boundaries of the community is drawn on an accurate map of the community The number of line intersections ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
be maintained describing for each location factors which may affect the recorded field such as the approximate time of measurement weather topography overhead wiring heights and types of vegetation buildings and other structures The orientation with respect to the measuring location shall be indicated of objects of suc... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the date of its most recent calibration by the manufacturer or by a laboratory Complete details of any instrument not of standard manufacture shall be submitted vii A detailed description of the procedure employed in the calibration of the measuring equipment including field strength meters measuring antenna and connec... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
i Testing equipment Measure the field strength of the visual carrier with a calibrated instrument with an i f bandwidth of at least 200 kHz but no greater than one megahertz 1 000 kHz Perform an on site calibration of the instrument in accordance with the manufacturer s specifications The instrument must accurately ind... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
serial number and rated accuracy and the date of the most recent calibration by the manufacturer or by a laboratory Include complete details of any instrument not of standard manufacture ii A detailed description of the calibration of the measuring equipment including field strength meters measuring antenna and connect... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
practical If possible the first testing point should be chosen as the center point of a square whose corners are the four other locations Calculate the median of the five measurements in units of dBµ and report it as the measurement iii Multiple signals A If more than one signal is being measured i e signals from diffe... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
measured and if using an un balanced line employ a suitable balance Take account of the transmission line loss for each frequency being measured ii Weather Do not take measurements during periods of inclement weather including but not limited to periods of heavy rainfall snowfall accumulation high windspeed or any comb... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
strength in units of dBµ after adjustment for line loss and antenna factor of the five readings made during the cluster measurement process with the median value highlighted 40 FR 27683 July 1 1975 as amended at 50 FR 23701 June 5 1985 64 FR 7127 Feb 12 1999 64 FR 73433 Dec 30 1999 75 FR 81498 Dec 28 2010 47 CFR 73 686... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
shall be measured by application of a modulating signal to the transmitter input terminals in place of the normal composite television video signal The signal applied shall be a composite signal composed of a synchronizing signal to establish peak output voltage plus a variable frequency sine wave voltage occupying the... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
a frequency of 3 0 MHz and then linearly decreasing to 4 18 MHz so as to be equal to 0 17 µsecs at 3 58 MHz The tolerance on the envelope delay shall be 0 05 µsecs at 3 58 MHz The tolerance shall increase linearly to 0 1 µsec down to 2 1 MHz and remain at 0 1 µsec down to 0 2 MHz Tolerances for the interval of 0 0 to 0... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
20 nor more than 100 lines such lines not to include any portion of the blanking interval However for color transmissions 73 682 a 5 and 6 shall be controlling b Aural transmitter 1 Pre emphasis shall be employed as closely as practicable in accordance with the impedance frequency characteristic of a series inductance ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the state of the art permits As measured at the output terminals of the transmitter including harmonic filters if required all emissions removed in frequency in excess of 3 MHz above or below the respective channel edge shall be attenuated no less than 60 dB below the visual transmitted power The 60 dB value for televi... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
ERP in any direction or to change the transmitting location of an existing station i For the purposes of this paragraph e a protected land mobile facility is a receiver that is intended to receive transmissions from licensed land mobile stations within the frequency band below 470 MHz and is associated with one or more... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
with equipment set to a 30 kHz measurement bandwidth including the entire applicable land mobile channel A TV permittee must correct a desensitization problem if its occurrence can be directly linked to the start of the TV operation and the land mobile station is using facilities with typical desensitization rejection ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
one of these indicating instruments becomes defective when no substitute which conforms with the required specifications is available the station may be operated without the defective instrument pending its repair or replacement for a period not in excess of 60 days without further authority of the FCC provided that 1 ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
without specific authority from the FCC provided that the date and time of the initial out of tolerance condition has been entered in the station log If the operation at variance will exceed 10 consecutive days a notification must be sent to the FCC in Washington D C not later than the 10th day of such operation In the... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
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