FCC Web Documents citing 73.151

as compiled by hallikainen.com/FccRules on 2012 07 01

• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-02-2152A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-02-2152A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-02-2152A1.txt
  • Mutually-exclusive MDS applications. PART 73--RADIO BROADCAST SERVICES SUBPART A - AM BROADCAST STATIONS Brief Description: These rules provide for compliance and authorization of AM radio equipment and licenses. Need: These rules prescribe certain technical requirements and procedures for AM broadcast radio services. Legal Basis: 47 U.S.C. §§ 154, 303, 334, 336. Section Number and Title: 73.35 Calculation of improvement factors. 73.151 Field strength measurements to establish performance of directional antennas. 73.152 Modification of directional antenna data. 73.183 Groundwave signals. SUBPART B - FM BROADCAST STATIONS Brief Description: These rules provide for compliance and authorization of FM radio equipment and licenses. Need: These rules prescribe certain technical requirements and procedures for FM broadcast radio services. Legal Basis: 47 U.S.C. §§ 154, 303,
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-07-129A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-07-129A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-07-129A1.txt
  • only if the Stations' employment unit has five or more full time employees. Furthermore, Litton's April 6, 2006, measurements fail to evidence unauthorized WVKO(AM) operation. First, Litton neglects to specify the measurements obtained from his April 6, 2006, field strength test of WVKO(AM)'s radiated power. Further, Litton appears to have disregarded the field strength measurement guidelines set out in Sections 73.151 and 73.154 of the Rules. These rules require that measurements be taken at certain monitoring point locations. Litton also has failed to submit information and make representations necessary to establish the reliability of the meter used for these measurements. Accordingly, Litton's unsupported allegation regarding nighttime operations do not raise a substantial and material question of fact warranting further inquiry. Moreover,
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-09-2340A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-09-2340A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-09-2340A1.txt
  • are used in comparing measured and calculated impedances, the model may be considered to have two parts: the moment method model and the circuit model. Stations using base current (or voltage) sampling must take into account both the moment method model and the circuit model when calculating operating parameters. Agreement between calculated and measured tower base impedances According to Section 73.151(c)(2)(ii), modeled tower impedances must agree with measured values within +/- 2 ohms and +/- 4 percent for resistance and reactance. The following example shows the calculation of the permissible tolerance for a measured base impedance of 20 - j32 ohms: The tolerance for the resistance term is (2 + 0.04 x 20), or 2.80 ohms. Calculated base resistance must therefore
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-211634A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-211634A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-211634A1.txt
  • released text of 47 C.F.R. § 73.154(b) is amended by revising the first sentence of paragraph (b) to read as follows: § 73.154 AM directional antenna partial proof of performance measurements. ***** (b) The measurements are to be made within 3 to 15 kilometers from the center of the antenna array. *** ***** The released text of 47 C.F.R. § 73.151(a)(3) is amended to read as follows: § 73.151 Field strength measurements to establish performance of directional antennas. (a) *** (3) A monitoring point shall be established on each radial for which the construction permit limits the radiated field. The following information shall be supplied for each monitoring point: Measured field strength. An accurate and detailed description of each monitoring point.
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-254049A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-254049A1.pdf
  • fence.'' An opening on the south side of the protective property fence made the fence ineffective. 47 C.F.R. § 73.1225 (d)(2): ``Commercial and noncommercial AM stations must make the following information also available upon request by representatives of the FCC. ... (2) Copy of the most recent field strength measurements made to establish performance of directional antennas required by § 73.151.'' Copy of the most recent field strength measurements were not available at the time of the inspection. 47 C.F.R. § 73.1230 (a): ``Posting of station license. The station license and any other instrument of station authorization shall be posted in a conspicuous place and in such a manner that all terms are visible at the place the licensee considers to
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-290290A3.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-290290A3.pdf
  • calculated on the basis of the number of stations on whose behalf the annual report is filed. 7 A fee is not imposed for requests to determine power by the direct method under Section 73.51 of the Rules. The new license fee is required for stations seeking a new license pursuant to a moment method proof of performance under Section 73.151(c) of the Rules. The fee is not required for other license modifications which may be made without prior authorization from the FCC. 8 A directional antenna is an antenna that is designed or altered for the purpose of obtaining a noncircular radiation pattern. Directional antennas may be employed for the purpose of improving service or for the purpose of using
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-308196A1.doc
  • calculated on the basis of the number of stations on whose behalf the annual report is filed. 7 A fee is not imposed for requests to determine power by the direct method under Section 73.51 of the Rules. The new license fee is required for stations seeking a new license pursuant to a moment method proof of performance under Section 73.151(c) of the Rules. The fee is not required for other license modifications which may be made without prior authorization from the FCC. 8 A directional antenna is an antenna that is designed or altered for the purpose of obtaining a noncircular radiation pattern. Directional antennas may be employed for the purpose of improving service or for the purpose of using
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-01-60A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-01-60A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-01-60A1.txt
  • the common point current reading and the monitoring point values are within the tolerances or limits prescribed by the rules and the instrument of authorization, or if the substitution of the new antenna monitor for the old results in changes in these parameters, a partial proof of performance shall be executed and analyzed in accordance with Sec. 73.154. ***** Section 73.151 is amended by revising subsection (a) to read as follows: § 73.151 Field strength measurements to establish performance of directional antennas. ***** (a) In addition to the information required by the license application form, the following showing must be submitted to establish, for each mode of directional operation, that the effective measured field strength (RMS) at 1 kilometer (km) is
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-228A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-228A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-228A1.txt
  • exceeding 120 days. The provision of this paragraph supersedes any schedule specified on a station license issued prior to January 1, 1986. The results of the measurements are to be entered into the station log pursuant to the provisions of § 73.1820. (b) If the AM license was granted on the basis of field strength measurements performed pursuant to § 73.151(a), partial proof of performance measurements using the procedures described in § 73.154 must be made whenever the licensee has reason to believe that the radiated field may be exceeding the limits for which the station was most recently authorized to operate. ***** Amend § 73.68 by revising paragraph (a) to read as follows, by adding a new paragraph (b), and
• http://transition.fcc.gov/Bureaus/Mass_Media/Notices/1998/fcc98117.pdf http://transition.fcc.gov/Bureaus/Mass_Media/Notices/1998/fcc98117.wp
  • 96-58, 12 FCC Rcd 12371 (1997), to the index of rule sections at the end of Part 73. Furthermore, we shall correct a typographical error in Section 73.312(b) ("Topographic data"), an error in the instructions for use of the F(50,50) field strength chart in Section 73.313(c)(2) ("Prediction of coverage"), and convert the English unit measurements to metric units in Section 73.151 ("Field strength measurements to establish performance of directional antennas"), consistent with the rest of the Commission's rules. 73. In Grandfathered Short-Spaced FM Stations, 12 FCC Rcd 11840 (1997), the Commission clarified and revised the rules for pre-1964 grandfathered short-spaced FM radio broadcast stations to streamline the method of proposing modifications to existing facilities. The order adopted rules allowing grandfathered stations
• http://transition.fcc.gov/eb/FieldNotices/2003/DOC-254049A1.html
  • protective property fence.'' An opening on the south side of the protective property fence made the fence ineffective. 47 C.F.R. 73.1225 (d)(2): ``Commercial and noncommercial AM stations must make the following information also available upon request by representatives of the FCC. ... (2) Copy of the most recent field strength measurements made to establish performance of directional antennas required by 73.151.'' Copy of the most recent field strength measurements were not available at the time of the inspection. 47 C.F.R. 73.1230 (a): ``Posting of station license. The station license and any other instrument of station authorization shall be posted in a conspicuous place and in such a manner that all terms are visible at the place the licensee considers to be
• http://transition.fcc.gov/fcc-bin/audio/amfmrule.html
  • [118]Public Notice, 12/09/1985 ] [119]TEXT [120]PDF 73.69 Antenna monitors. [121]TEXT [122]PDF 73.72 Operating during the experimental period. [123]TEXT [124]PDF 73.88 Blanketing interference. [125]TEXT [126]PDF 73.99 Presunrise service authorization (PSRA) and postsunset service authorization (PSSA). [127]TEXT [128]PDF 73.127 Use of multiplex transmission. [129]TEXT [130]PDF 73.128 AM stereophonic broadcasting. [131]TEXT [132]PDF 73.132 Territorial exclusivity. [133]TEXT [134]PDF 73.150 Directional antenna systems. [135]TEXT [136]PDF 73.151 Field strength measurements to establish performance of directional antennas. [137]TEXT [138]PDF 73.152 Modification of directional antenna data. [139]TEXT [140]PDF 73.153 Field strength measurements in support of applications or evidence at hearings. [141]TEXT [142]PDF 73.154 AM directional antenna partial proof of performance measurements. [143]TEXT [144]PDF 73.157 Antenna testing during daytime. [145]TEXT [146]PDF 73.158 Directional antenna monitoring points. [147]TEXT [148]PDF 73.160 Vertical
• http://transition.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/97-290.doc http://transition.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/97-290.pdf
  • require any more than 85% RMS. Gallagher notes that the 85% RMS policy was "easy to apply and not difficult to achieve in the field [and that] the RMS of a relative field pattern is an indicator of the overall efficiency of the pattern." Gallagher and Crawford separately note that the corresponding rule for the AM service (47 C.F.R. Section 73.151(a)) requires that the RMS of the measured AM pattern must be at least 85% of the standard pattern. Crawford concludes that an 85% RMS standard is "reasonable and not overly burdensome, [and that] antenna manufacturers are keyed to this policy." Shively Labs ("Shively"), a manufacturer of directional antennas, states that it presently "manufacturers FM directional antenna systems that comply with
• http://www.fcc.gov/Bureaus/Mass_Media/Notices/1998/fcc98117.pdf http://www.fcc.gov/Bureaus/Mass_Media/Notices/1998/fcc98117.txt http://www.fcc.gov/Bureaus/Mass_Media/Notices/1998/fcc98117.wp
  • 96-58, 12 FCC Rcd 12371 (1997), to the index of rule sections at the end of Part 73. Furthermore, we shall correct a typographical error in Section 73.312(b) ("Topographic data"), an error in the instructions for use of the F(50,50) field strength chart in Section 73.313(c)(2) ("Prediction of coverage"), and convert the English unit measurements to metric units in Section 73.151 ("Field strength measurements to establish performance of directional antennas"), consistent with the rest of the Commission's rules. 73. In Grandfathered Short-Spaced FM Stations, 12 FCC Rcd 11840 (1997), the Commission clarified and revised the rules for pre-1964 grandfathered short-spaced FM radio broadcast stations to streamline the method of proposing modifications to existing facilities. The order adopted rules allowing grandfathered stations
• http://www.fcc.gov/Bureaus/Mass_Media/Notices/1999/fcc99126.doc http://www.fcc.gov/Bureaus/Mass_Media/Notices/1999/fcc99126.txt
  • proof. We believe that allowing measurements at fewer points and along fewer radials can sharply cut the time and cost of conducting a proof of performance, and that relaxing our proof requirements can be accomplished without affecting the technical integrity of the AM service. A. Full Proof of Performance 1. Number of Radials . The present rule, 47 C.F.R. § 73.151, requires that a permittee use a minimum of 8 radials to demonstrate that an array conforms to its authorized pattern as follows: (a) At least three radials in the main lobe of the pattern, one toward the azimuth of maximum radiation and one to either side of this azimuth. (b) At least five additional radials distributed across the pattern to
• http://www.fcc.gov/Bureaus/Mass_Media/Orders/2001/fcc01060.doc http://www.fcc.gov/Bureaus/Mass_Media/Orders/2001/fcc01060.txt
  • the common point current reading and the monitoring point values are within the tolerances or limits prescribed by the rules and the instrument of authorization, or if the substitution of the new antenna monitor for the old results in changes in these parameters, a partial proof of performance shall be executed and analyzed in accordance with Sec. 73.154. ***** Section 73.151 is amended by revising subsection (a) to read as follows: § 73.151 Field strength measurements to establish performance of directional antennas. ***** (a) In addition to the information required by the license application form, the following showing must be submitted to establish, for each mode of directional operation, that the effective measured field strength (RMS) at 1 kilometer (km) is
• http://www.fcc.gov/eb/FieldNotices/2003/DOC-254049A1.html
  • protective property fence.'' An opening on the south side of the protective property fence made the fence ineffective. 47 C.F.R. 73.1225 (d)(2): ``Commercial and noncommercial AM stations must make the following information also available upon request by representatives of the FCC. ... (2) Copy of the most recent field strength measurements made to establish performance of directional antennas required by 73.151.'' Copy of the most recent field strength measurements were not available at the time of the inspection. 47 C.F.R. 73.1230 (a): ``Posting of station license. The station license and any other instrument of station authorization shall be posted in a conspicuous place and in such a manner that all terms are visible at the place the licensee considers to be
• http://www.fcc.gov/fcc-bin/audio/DA-07-129A1.doc http://www.fcc.gov/fcc-bin/audio/DA-07-129A1.pdf
  • only if the Stations' employment unit has five or more full time employees. Furthermore, Litton's April 6, 2006, measurements fail to evidence unauthorized WVKO(AM) operation. First, Litton neglects to specify the measurements obtained from his April 6, 2006, field strength test of WVKO(AM)'s radiated power. Further, Litton appears to have disregarded the field strength measurement guidelines set out in Sections 73.151 and 73.154 of the Rules. These rules require that measurements be taken at certain monitoring point locations. Litton also has failed to submit information and make representations necessary to establish the reliability of the meter used for these measurements. Accordingly, Litton's unsupported allegation regarding nighttime operations do not raise a substantial and material question of fact warranting further inquiry. Moreover,
• http://www.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/01-60.doc http://www.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/01-60.pdf
  • the common point current reading and the monitoring point values are within the tolerances or limits prescribed by the rules and the instrument of authorization, or if the substitution of the new antenna monitor for the old results in changes in these parameters, a partial proof of performance shall be executed and analyzed in accordance with Sec. 73.154. ***** Section 73.151 is amended by revising subsection (a) to read as follows: § 73.151 Field strength measurements to establish performance of directional antennas. ***** (a) In addition to the information required by the license application form, the following showing must be submitted to establish, for each mode of directional operation, that the effective measured field strength (RMS) at 1 kilometer (km) is
• http://www.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/97-290.doc http://www.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/97-290.pdf
  • require any more than 85% RMS. Gallagher notes that the 85% RMS policy was "easy to apply and not difficult to achieve in the field [and that] the RMS of a relative field pattern is an indicator of the overall efficiency of the pattern." Gallagher and Crawford separately note that the corresponding rule for the AM service (47 C.F.R. Section 73.151(a)) requires that the RMS of the measured AM pattern must be at least 85% of the standard pattern. Crawford concludes that an 85% RMS standard is "reasonable and not overly burdensome, [and that] antenna manufacturers are keyed to this policy." Shively Labs ("Shively"), a manufacturer of directional antennas, states that it presently "manufacturers FM directional antenna systems that comply with
• http://www.fcc.gov/mb/audio/bickel/amfmrule.html
  • [118]Public Notice, 12/09/1985 ] [119]TEXT [120]PDF 73.69 Antenna monitors. [121]TEXT [122]PDF 73.72 Operating during the experimental period. [123]TEXT [124]PDF 73.88 Blanketing interference. [125]TEXT [126]PDF 73.99 Presunrise service authorization (PSRA) and postsunset service authorization (PSSA). [127]TEXT [128]PDF 73.127 Use of multiplex transmission. [129]TEXT [130]PDF 73.128 AM stereophonic broadcasting. [131]TEXT [132]PDF 73.132 Territorial exclusivity. [133]TEXT [134]PDF 73.150 Directional antenna systems. [135]TEXT [136]PDF 73.151 Field strength measurements to establish performance of directional antennas. [137]TEXT [138]PDF 73.152 Modification of directional antenna data. [139]TEXT [140]PDF 73.153 Field strength measurements in support of applications or evidence at hearings. [141]TEXT [142]PDF 73.154 AM directional antenna partial proof of performance measurements. [143]TEXT [144]PDF 73.157 Antenna testing during daytime. [145]TEXT [146]PDF 73.158 Directional antenna monitoring points. [147]TEXT [148]PDF 73.160 Vertical
• http://www.fcc.gov/mb/audio/includes/63-amfmrule.htm
  • [71]Public Notice, 12/09/1985 ] [72]TEXT [73]PDF 73.69 Antenna monitors. [74]TEXT [75]PDF 73.72 Operating during the experimental period. [76]TEXT [77]PDF 73.88 Blanketing interference. [78]TEXT [79]PDF 73.99 Presunrise service authorization (PSRA) and postsunset service authorization (PSSA). [80]TEXT [81]PDF 73.127 Use of multiplex transmission. [82]TEXT [83]PDF 73.128 AM stereophonic broadcasting. [84]TEXT [85]PDF 73.132 Territorial exclusivity. [86]TEXT [87]PDF 73.150 Directional antenna systems. [88]TEXT [89]PDF 73.151 Field strength measurements to establish performance of directional antennas. [90]TEXT [91]PDF 73.152 Modification of directional antenna data. [92]TEXT [93]PDF 73.153 Field strength measurements in support of applications or evidence at hearings. [94]TEXT [95]PDF 73.154 AM directional antenna partial proof of performance measurements. [96]TEXT [97]PDF 73.157 Antenna testing during daytime. [98]TEXT [99]PDF 73.158 Directional antenna monitoring points. [100]TEXT [101]PDF 73.160 Vertical