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to the input signals of FM translator or FM booster stations 73 840 Operating power and mode tolerances 73 845 Transmission system operation 73 850 Operating schedule 73 853 Licensing requirements and service 73 854 Unlicensed radio operations 73 855 Ownership limits 73 858 Attribution of LPFM station interests 73 860 ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
1217 Broadcast hoaxes 73 1225 Station inspections by FCC 73 1226 Availability to FCC of station logs and records 73 1250 Broadcasting emergency information 73 1300 Unattended station operation 73 1350 Transmission system operation 73 1400 Transmission system monitoring and control 73 1515 Special field test authorizati... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
73 2080 Equal employment opportunities EEO 73 2090 Ban on discrimination in broadcast transactions 73 3500 Application and report forms 73 3511 Applications required 73 3512 Where to file number of copies 73 3513 Signing of applications 73 3514 Content of applications 47 CFR Part 73 Feb 20 2024 enhanced display page 8 ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
3561 Staff consideration of applications requiring Commission action 73 3562 Staff consideration of applications not requiring action by the Commission 73 3564 Acceptance of applications 73 3566 Defective applications 73 3568 Dismissal of applications 73 3571 Processing of AM broadcast station applications 73 3572 Proc... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
transition 73 3999 Enforcement of 18 U S C 1464 restrictions on the transmission of obscene and indecent material 73 4000 Listing of FCC policies 73 4005 Advertising refusal to sell 73 4015 Applications for AM and FM construction permits incomplete or defective 73 4017 Application processing Commercial FM stations 73 4... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
4246 Stereophonic pilot subcarrier use during monophonic programming 73 4247 STV Competing applications 73 4250 Subliminal perception 73 4255 Tax certificates Issuance of 73 4260 Teaser announcements 73 4265 Telephone conversation broadcasts network and like sources 73 4266 Tender offer and proxy statements 73 4267 Tim... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
TV station protection of low power TV TV translator digital low power TV and digital TV translator stations 73 6020 Protection of stations in the land mobile radio service 73 6022 Negotiated interference and relocation agreements 73 6023 Distributed transmission systems 73 6024 Transmission standards and system require... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
FR 8587 Mar 1 1982 73 14 AM broadcast definitions AM broadcast band The band of frequencies extending from 535 to 1705 kHz AM broadcast channel The band of frequencies occupied by the carrier and the upper and lower sidebands of an AM broadcast signal with the carrier frequency at the center Channels are designated by ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
from which an AM station may broadcast for short periods without prior Commission authorization or notice to the Commission while the main facility is not in operation e g where tower work necessitates turning off the main antenna or where lightning has caused damage to the main antenna or transmission system See 73 16... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
experimentation Frequency departure The amount of variation of a carrier frequency or center frequency from its assigned value Incidental phase modulation The peak phase deviation in radians resulting from the process of amplitude modulation Input power Means the product of the direct voltage applied to the last radio ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
I facility A station operating in the 1605 1705 kHz band featuring fulltime operation with stereo competitive technical quality 10 kW daytime power 1 kW nighttime power non directional antenna or a simple directional antenna system and separated by 400 800 km from other co channel stations Model II facility A station o... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
20 2024 47 CFR 73 14 Plate modulation Radio Broadcast Services MIN Instantaneous minimum level of the modulated radio frequency envelope C Carrier level of radio frequency envelope without modulation Plate modulation The modulation produced by introduction of the modulating wave into the plate circuit of any tube in wh... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
does not receive a signal strength of at least 1 mV m from an authorized FM station 47 FR 8587 Mar 1 1982 as amended at 47 FR 13164 Mar 29 1982 47 FR 13812 Apr 1 1982 50 FR 18821 May 2 1985 50 FR 47054 Nov 14 1985 56 FR 64856 Dec 12 1991 62 FR 51058 Sept 30 1997 66 FR 20755 Apr 25 2001 81 FR 2759 Jan 19 2016 82 FR 5788... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
at least 107 5 mV m at 1 kilometer and a maximum power of 50 kW or 10 kW for stations that are authorized to operate in the 1605 1705 kHz band 3 Class D station A Class D station operates either daytime limited time or unlimited time with nighttime power less than 0 25 kW and an equivalent RMS antenna field of less tha... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
consequence of interference in accordance with 73 182 The power shall not be less than 0 25 kW nor more than 1 kW Class C stations that are licensed to operate with 0 1 kW may continue to do so 56 FR 64856 Dec 12 1991 as amended at 81 FR 2759 Jan 19 2016 73 23 AM broadcast station applications affected by international... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
3605 c will apply d In some circumstances special international considerations may require that the FCC in acting on applications follow procedures different from those established for general use In such cases affected applicants will be informed of the procedures to be followed 56 FR 64856 Dec 12 1991 73 24 Broadcast... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
That in the case of an application for a Class B or Class D station on a clear channel the proposed station would radiate during two hours following local sunrise and two hours preceding local sunset in any direction toward the 0 1 mV m groundwave contour of a co channel United States Class A station no more than the m... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
interest convenience and necessity will be served through the operation under the proposed assignment 28 FR 13574 Dec 14 1963 as amended at 38 FR 5874 Mar 5 1973 49 FR 43960 Nov 1 1984 50 FR 40014 Oct 1 1985 52 FR 11654 Apr 10 1987 53 FR 1031 Jan 15 1988 56 FR 64857 Dec 12 1991 81 FR 2759 Jan 19 2016 73 25 Clear channe... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
of the U S station shall be located not less than 650 miles from the nearest point of land in the Bahama Islands c Class A Class B and Class D stations may be assigned on 540 690 730 740 800 860 900 990 1010 1050 1220 1540 1570 and 1580 kHz 28 FR 13574 Dec 14 1963 as amended at 33 FR 4410 Mar 12 1968 35 FR 18052 Nov 25... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the conterminous 48 states the following frequencies are designated as local channels and are assigned for use by Class C stations 1230 1240 1340 1400 1450 and 1490 kHz 56 FR 64857 Dec 12 1991 73 28 Assignment of stations to channels a The Commission will not make an AM station assignment that does not conform with int... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
be granted for the operation of a Class C station on a regional channel 56 FR 64857 Dec 12 1991 47 CFR 73 29 enhanced display page 20 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 30 Radio Broadcast Services 73 30 Petition for authorization of an allotment in the 1605 1705 kHz band a Any party interested i... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the process continues to the station with the next lowest improvement factor c If awarded an allotment a petitioner will have sixty 60 days from the date of public notice of selection to file an application for construction permit on FCC Form 301 See 73 24 and 73 37 e for filing requirements Unless instructed by the Co... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
administered on an allotment basis or modified to an assignment method If appropriate the Commission will later develop further procedures for use of the 1605 1705 kHz band by existing station licensees and others Note 4 Other than the exception specified in note 1 of this section existing fulltime stations are conside... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
both the candidate allotment and the established allotment are within the same priority group 58 FR 27949 May 12 1993 47 CFR 73 30 c enhanced display page 22 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 31 Radio Broadcast Services 73 31 Rounding of nominal power specified on applications a An application ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
existing fulltime AM station licensed in the 535 1605 kHz band will be ranked according to the station s calculated improvement factor See 73 30 Improvement factors relate to both nighttime and daytime interference conditions and are based on two distinct considerations a Service area lost by other stations due to inte... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
M 3 ground conductivity values are to be used exclusively in accordance with the pertinent provisions of 73 183 c 1 56 FR 64858 Dec 12 1991 73 37 Applications for broadcast facilities showing required a No application will be accepted for a new station if the proposed operation would involve overlap of signal strength ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
power to more than 500 watts if prohibited overlap would be involved even if successive applications should be tendered d In addition to demonstrating compliance with paragraphs a and as appropriate b and c of this section an application for a new AM broadcast station or for a major change see 73 3571 a 1 in an authori... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
stations in the frequency band 1610 1700 kHz or the current separation distance whichever is greater Modifications that would result in a spacing or spacings that fails to meet any of the separations must include a showing that appropriate adjustment has been made to the radiated signal which effectively results in a s... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
with a foreign station with a frequency separation of 20 kHz in which case the provisions of the international agreement will apply in lieu of this section Note 3 In determining the number of authorized aural transmission facilities in a given community applications for that community in hearing or otherwise having pro... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
at least 25 dB below the unmodulated carrier level emissions 20 kHz to 30 kHz removed from the carrier must be attenuated at least 35 dB below the unmodulated carrier level emissions 30 kHz to 60 kHz removed from the carrier must be attenuated at least 5 1 dB kHz below the unmodulated carrier level and emissions betwee... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
complying with the ANSI EIA 549 1988 NRSC 1 AM Preemphasis Deemphasis and Broadcast Transmission Bandwidth Specifications NRSC 1 prior to June 30 1990 or from the original commencement of operation will until June 30 1994 be considered to comply with paragraphs a and b of this section absent any reason for the Commissi... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
73 157 b The simultaneous use of a common antenna or antenna structure by more than one AM station or by a station of any other type or service may be authorized provided 1 Engineering data are submitted showing that satisfactory operation of each station will be obtained without adversely affecting the operation of th... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Aug 12 1985 51 FR 2707 Jan 21 1986 51 FR 26250 July 22 1986 63 FR 33875 June 22 1998 67 FR 13231 Mar 21 2002 78 FR 66298 Nov 5 2013 47 CFR 73 45 d 2 enhanced display page 27 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 49 Radio Broadcast Services 73 49 AM transmission system fencing requirements Antenna t... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
authorized antenna input power to directional antennas shall exceed the nominal power by 5 3 percent 3 In specific cases it may be necessary to limit the radiated field to a level below that which would result if normal power were delivered to the antenna In such cases excess power may be dissipated in the antenna feed... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
to date as of 2 20 2024 47 CFR 73 51 c 2 i Radio Broadcast Services i A full description of the means by which transmitter output power will be reduced ii Where the proposed transmitter power output level s is less than 90 of the rated power of the transmitter equipment performance measurements must be made to confirm ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
derivation This factor is to be established by one of the methods described in paragraph f of this section and retained in the station records f The value of F is to be determined by one of the following procedures listed in order of preference 1 If the station had previously been authorized and operating by determinin... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
1972 as amended at 42 FR 36827 July 18 1977 42 FR 61863 Dec 7 1977 44 FR 36036 June 20 1979 47 FR 28387 June 30 1982 48 FR 38477 Aug 24 1983 48 FR 44805 Sept 30 1983 49 FR 3999 Feb 1 1984 49 FR 4210 Feb 3 1984 49 FR 49850 Dec 24 1984 50 FR 24521 June 11 1985 52 FR 10570 Apr 2 1987 83 FR 48963 Sept 28 2018 73 53 Require... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
shall be 0 1 percent or less of the full scale value 6 The monitor shall be equipped with means if necessary to resolve ambiguities in indication 7 If the monitor is provided with more than one RF input terminal in addition to a reference input terminal appropriate switching shall be provided in the monitor so that the... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
considered as part of the monitor 11 When an RF signal of an amplitude within a range specified by the manufacturer is applied to the reference RF input terminal of the monitor and another RF signal of the same frequency and of equal or lower amplitude is applied to any other selected RF input terminal indications shal... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
is operated and tested under the following conditions i After continuous operation for 1 hour the monitor shall be calibrated and adjusted in accordance with the manufacturer s instructions ii The monitor shall be subjected to variations in ambient temperature between the limits of 10 and 40 C external meters furnished... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
to equipment manufactured after July 1 1992 Use of a monitor in the 1605 1705 kHz band which is not approved for such operation will be permitted pending the general availability of 535 1705 kHz band monitors if a manufacturer can demonstrate in the interim that its monitor performs in accordance with the standards in ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
must specify the antenna or common point resistance at the operating frequency The following information must also be kept on file at the station 1 A full description of the method used to make measurements 2 A schematic diagram showing clearly all components of coupling circuits the point of resistance measurement the... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
device for providing direct current to indicating instrument 3 Capacity coupling to radio frequency current sensing device for providing direct current to indicating instrument 4 Current transformer connected to radio frequency current sensing device for providing direct current to indicating instrument 5 Using transmi... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
curves are provided at the transmitter control point showing the relationship between the arbitrary scales and the reading of the main meters g If a malfunction affects the remote reading indicators of the antenna or common point ammeter the operating power may be determined by a method using alternative procedures as ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
current meter of a nondirectional station which does not employ a remote antenna ammeter or if the defective instrument is the common point meter of a station which employs a directional antenna and does not employ a remote common point meter the operating power shall be determined by a method described in 73 51 a 1 or... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Part 73 up to date as of 2 20 2024 47 CFR 73 61 b Radio Broadcast Services stations not having an approved sampling system must make the measurements once each calendar quarter at intervals not exceeding 120 days The provision of this paragraph supersedes any schedule specified on a station license issued prior to Janu... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
excessive radiation See 73 1350 e 1 Any variation of operating parameters by more than 15 percent sample current ratio or 10 degrees in phase any monitor point that exceeds 125 percent of the licensed limit or any operation at variance that results in complaints of interference shall be considered operation substantial... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
Broadcast Services 4 If operation pursuant to paragraph c 3 of this section is necessary or before the 30 day period specified in paragraph c 2 of this expires the licensee must request a Special Temporary Authority STA in accordance with section 73 1635 to continue operation with parameters at variance and or with red... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
of sampling systems may be used upon demonstration of stable operation to the FCC b An AM station permittee authorized to construct a directional antenna system which will be subject to a proof of performance based on moment method modeling as described in 73 151 c shall install a sampling system conforming to the requ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
requested and obtained from the Commission s Audio Division Media Bureau in Washington to operate with parameters at variance with licensed values pending issuance of a modified license specifying parameters subsequent to modification or replacement of components 2 Immediately prior to modification or replacement of co... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
specified above 41 FR 7405 Feb 18 1976 Editorial Note For FEDERAL REGISTER citations affecting 73 68 see the List of CFR Sections Affected which appears in the Finding Aids section of the printed volume and at www govinfo gov 73 69 Antenna monitors a Each station using a directional antenna must have in operation at th... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
specified in the rules the following indications must be recorded for each radiation pattern Final plate current and plate voltage common point current antenna monitor phase and current indications and the field strength at each monitoring point 3 With the new monitor substituted for the old all indications specified i... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
station may operate during the experimental period the time between midnight and sunrise local time on its assigned frequency and with its authorized power for the routine testing and maintenance of its transmitting system and for conducting experimentation under an experimental authorization provided no interference i... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
only co channel stations for interference protection purposes b Presunrise service authorizations PSRA permit 1 Class D stations operating on Mexican Bahamian and Canadian priority Class A clear channels to commence PSRA operation at 6 a m local time and to continue such operation until the sunrise times specified in t... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
of co channel U S Class A stations protection to the 0 5 mV m 50 skywave contours of these stations is not required 47 CFR 73 99 c 1 ii enhanced display page 39 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 99 c 1 iii Radio Broadcast Services iii In determining the protection to be provided the effect of e... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
such specified times or until sunset at the nearest Class A station located west of the Class D station whichever is earlier Class D stations located west of the Class A station do not qualify for PSSA operation 4 Class D stations on regional channels to commence PSSA operation at sunset times specified on their basic ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
antenna systems when specified on the license In performing calculations to determine assigned power and times for commencement of PSRA and PSSA operation the following standards and criteria will be used 1 Class D stations operating in accordance with paragraphs b 1 b 2 d 1 and d 2 of this section are required to prot... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
local time are required to fully protect U S Class B stations 6 The protection that Class D stations on regional channels are required to provide when operating PSSA until 6 p m local time is as follows i For the first half hour of PSSA operation protection will be calculated at sunset plus 30 minutes at the site of th... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
PSRA or PSSA is secondary to the basic instrument of authorization with which it is to be associated The PSRA or PSSA may be suspended modified or withdrawn by the FCC without prior notice or right to hearing if necessary to resolve interference conflicts to implement agreements with foreign governments or in other cir... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
equipment in accordance with all phases of good engineering practice 56 FR 64860 Dec 12 1991 57 FR 43290 Sept 18 1992 as amended at 58 FR 27950 May 12 1993 73 127 Use of multiplex transmission The licensee of an AM broadcast station may use its AM carrier to transmit signals not audible on ordinary consumer receivers f... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
service The permittee or licensee must establish that the broadcast operation is in the public interest wholly apart from the subsidiary communications services provided d The station identification delayed recording and sponsor identification announcements required by 73 1201 73 1208 and 73 1212 are not applicable to ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
documented test procedures that are to be fully described in the application for type acceptance and the transmitting equipment instruction manual See 2 983 d 8 and j i Main channel L R under all conditions of amplitude modulations for the stereophonic system but not exceeding amplitude modulation on negative peaks of ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
in a positive direction The carrier phase shall likewise retard negative phase change when a right channel signal causes the transmitter envelope to be modulated in a positive direction The phase modulation shall be symmetrical for the condition of difference L R channel information sent without the presence of envelop... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the difference signal ωc the angular velocity of the carrier Asn and Bsn are the nth sine and cosine coefficients of Csn 47 CFR 73 128 c 8 enhanced display page 45 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 132 Radio Broadcast Services Adn and Bdn are the nth sine and cosine coefficients of Cdn 58 FR 66... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
include the radiation pattern in the horizontal plane and radiation patterns at angles above this plane 1 Parties submitting directional antenna patterns pursuant to this section and 73 152 Modified standard pattern must submit patterns which are tabulated and plotted in units of millivolts per meter at 1 kilometer Not... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
no less than the value required by 73 189 b 2 of this part for a station of the class and nominal power for which the pattern is designed n Represents the number of elements towers in the directional array i Represents the ith element in the array Fi Represents the field ratio of the ith element in the array θ Represen... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
73 190 Figure 5 If the shortest element has an electrical height in excess of 0 5 wavelength g θ shall be computed as follows Erss is the root sum square of the amplitudes of the inverse fields of the elements of the array in the horizontal plane as used in the expression for E φ θ th see Eq 1 above and is computed as ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
successive patterns for specific angles of elevation need not be submitted Values of field strength on any pattern less than ten percent of the maximum field strength plotted on that pattern shall be shown on an enlarged scale Rectangular plots with a logarithmic ordinate need not utilize an expanded scale unless neces... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
5 Electrical description of the array showing i Relative amplitudes of the fields of the array elements ii Relative time phasing of the fields of the array elements in degrees leading or lagging iii Space phasing between elements in degrees iv Where waiver of the content of this section is requested or upon request of ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
significant figures vii Additional requirements relating to modified standard patterns appear in 73 152 c 3 and c 4 7 Any additional information required by the application form 47 CFR 73 150 b 7 enhanced display page 49 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 150 c Radio Broadcast Services c Sample ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
is a tabulation of part of the standard pattern Azimuth 0 30 60 Vertical angle 0 28 86 68 05 72 06 105 1286 78 860 97 246 41 235 23 48 26 50 37 18 247 89 87 57 03 28 87 The RMS of the standard pattern in the horizontal plane is 719 63 mV m at one kilometer 36 FR 919 Jan 20 1971 as amended at 37 FR 529 Jan 13 1972 41 FR... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
at 1 km as determined from field strength measurements taken and analyzed in accordance with 73 186 and a statement of the effective measured field strength RMS Measurements shall be made in the following directions i Those specified in the instrument of authorization ii In major lobes Generally one radial is sufficien... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
in its measuring position and with the camera so located that its field of view takes in as many pertinent landmarks as possible b For stations authorized to operate with simple directional antenna systems e g two towers in the 1605 1705 kHz band the measurements to support pattern RMS compliance referred to in paragra... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
resulting model description consisting of the length radius and number of segments of each wire for arrays using vertical wire sections to represent the towers or the length end point coordinates and radius of each wire used to represent leg and cross member sections for arrays using detailed tower structure representa... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
associated tower shall be no greater than 10 µH unless a measured value from the measurement point to the tower base with its insulator short circuited is used viii The shunt capacitance used to model the base region effects shall be no greater than 250 pF unless the measured or manufacturer s stated capacitance for ea... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
follow the procedures set forth in section 1 30003 b 2 of this chapter 2 i The computer model once verified by comparison with the measured base impedance matrix data shall be used to determine the appropriate antenna monitor parameters The moment method modeled parameters shall be established by using the verified mom... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
carrier frequency to establish length at frequencies corresponding to odd multiples of 1 8 wavelength immediately above and below the open circuit resonant frequency closest to carrier frequency while open circuited to establish characteristic impedance and at carrier frequency or if necessary at nearby frequencies whe... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
measured matrix impedances for each tower and those calculated by the method of moments program The antenna monitor sample indications must be initially adjusted to agree with the moment method model within 5 percent for the field ratio and 3 degrees in phase The measured matrix impedances must agree with the moment me... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
and or such changes as may be required in operating parameters so that all measured effective fields will be contained within the modified standard radiation pattern Permittees may also file an application specifying a modified standard radiation pattern even when measured radiation has not exceeded the standard patter... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
2 Excessive reradiating structures which should be shown on a plat of the antenna site and surrounding area 3 Other environmental factors they should be fully described 4 Judgment and experience of the engineer preparing the engineering portion of the application This must be supported with a full discussion of the per... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
directions When this augmentation is desired it shall be achieved by application of the following equation E φ θ aug E φ θ std 2 A g θ cos 180 DA S 2 where E φ θ std is the standard pattern field at some particular azimuth and elevation angle before augmentation computed pursuant to Eq 2 73 150 b 1 i E φ θ aug is the f... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
the case where there are spans which overlap the above formula shall be applied repeatedly once for each augmentation in ascending order of central azimuth of augmentation beginning with zero degrees representing true North Note that when spans overlap there will be in effect an augmentation of an augmentation And if t... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
on the page on which the horizontal plane pattern is plotted Where sector augmentation has been employed in designing the modified pattern the direction of maximum augmentation i e the central azimuth of augmentation shall be indicated on the horizontal plane pattern for each augmented sector and the limits of each sec... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
78 46 FR 11992 Feb 12 1981 as amended at 56 FR 64862 Dec 12 1991 66 FR 20756 Apr 25 2001 73 153 Field strength measurements in support of applications or evidence at hearings In the determination of interference groundwave field strength measurements will take precedence over theoretical values provided such measuremen... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
either the directional or the nondirectional field strength measured at that point in the last full proof 2 In the event that a meaningful comparison to full proof measurements cannot be made the licensee shall measure both directional and nondirectional field strength at eight points on each radial The points need not... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
performance using moment method modeling and internal array parameters as described in 73 151 c shall recertify the performance of the antenna monitor sampling system only in the case of repair to or replacement of affected system components and then only as to the repaired or replaced system components Any recertifica... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
most recent nondirectional proof of performance covering the licensed facilities 50 FR 30947 July 31 1985 73 158 Directional antenna monitoring points a When a licensee of a station using a directional antenna system finds that a field monitoring point as specified on the station authorization is no longer accessible o... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
with the FCC in Washington DC a request for a corrected station license showing the new monitoring point description The request shall include the information specified in paragraphs a 3 and 4 of this section and a copy of the station s current license 66 FR 20757 Apr 25 2001 as amended at 84 FR 2758 Feb 8 2019 73 160 ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
height G is the apparent electrical height the sum of A and B A B See Figure 1 of this section 47 CFR 73 160 b 2 enhanced display page 60 of 580 47 CFR Part 73 up to date as of 2 20 2024 47 CFR 73 160 b 2 Radio Broadcast Services 47 CFR 73 160 b 2 enhanced display page 61 of 580 47 CFR Part 73 up to date as of 2 20 202... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
of the above f θ formulas must be used in computing radiation in the vertical plane unless the applicant submits a special formula for a particular type of antenna If a special formula is submitted it must be accompanied by a complete derivation and sample calculations Submission of values for f θ only in a tabular or ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
73 21 The classifications of the AM broadcast stations are as follows 1 Class A stations operate on clear channels with powers no less than 10kW nor greater than 50 kW These stations are designed to render primary and secondary service over an extended area with their primary services areas protected from objectionable... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
a Class A station in Alaska is protected to the 100 µV m groundwave contour from co channel stations During nighttime hours a Class A station in Alaska is protected to the 100 µV m 50 percent skywave contour from co channel stations The 0 5 mV m groundwave contour is protected both daytime and nighttime from stations o... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
or other change in facilities by a station not on the original list is required to obtain minimum Alaskan Class A facilities any such application shall meet the interference protection requirements applicable to an Alaskan Class A proposal on the channel 47 CFR 73 182 a 1 ii enhanced display page 65 of 580 47 CFR Part ... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
nor more than 1 kW except as provided in 73 21 c 1 Such stations are normally protected to the daytime 0 5 mV m contour On local channels the separation required for the daytime protection shall also determine the nighttime separation Where directional antennas are employed daytime by Class C stations operating with mo... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
normally protected for its class the individual received limits shall be the established standard for such station with respect to interference from each other station c The four classes of AM broadcast stations have in general three types of service areas i e primary secondary and intermittent See 73 14 for the defini... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
any direction than that which would result from non directional operation using a single element of the directional array with 0 25 kW f All classes of broadcast stations have primary service areas subject to limitation by fading and noise and interference from other stations to the contours set out for each class of s... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
The intermittent service area may vary widely from day to night and generally varies over shorter intervals of time Only Class A stations are protected from interference from other stations to the intermittent service area i Broadcast stations are licensed to operate unlimited time limited time daytime share time and s... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
in order of decreasing magnitude adding the squares of the values and extracting the square root of the sum excluding those signals which are less than 50 of the RSS values of the higher signals already included 2 With respect to the root sum square values of interfering field strengths referred to in this section calc... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
new interfering signal or the increase in value of an existing interfering signal will cause the exclusion of a previously included signal and may cause a decrease in the calculated RSS value of interference In order to provide the Commission with more realistic information regarding gains and losses in service as a ba... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
m Station No 3 0 59 mV m Station No 4 0 58 mV m The RSS value from Nos 1 2 and 3 is 1 31 mV m therefore interference from No 4 is excluded for it is less than 50 of 1 31 mV m ii Station A receives interferences from Station No 1 1 00 mV m Station No 2 0 60 mV m Station No 3 0 59 mV m It is proposed to add a new limitat... | corpus_data/corpus_txt/47-CFR-Part-73-_up-to-date-as-of-2-20-2024_.txt |
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