FCC Web Documents citing 73.190

as compiled by hallikainen.com/FccRules on 2008 11 01

• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-03-832A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-03-832A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-03-832A1.txt
  • 418 F.2d 1153 (D.C. Cir. 1969), cert. denied 409 U.S. 1027 (1972). 1998 Biennial Regulatory Review-Streamlining of Mass Media Applications, Rules and Processes, 13 FCC Rcd 23056 (1998), recons. granted in part and denied, 14 FCC Rcd 17525, 17541 (1999) (``Streamlining MO&O''). See Streamlining MO&O, 14 FCC Rcd at 17538-39. See 47 C.F.R. � 73.183. See also 47 C.F.R. � 73.190 (Figure R3, replicating Figure M3). Neither of the two remaining events warrants additional construction time. While our grant of additional time encompasses the period in which Salem's informal objection was under consideration, our action is not based on the informal objection. Such objections are not comparable to the type of administrative review that qualifies for tolling. Similarly, initial zoning is
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-08-448A2.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-08-448A2.txt
  • pole antennas that were tested appear in Figures 10 and 11, respectively. Figure 12 is a sketch of the ground system. du Treil, Lundin & Rackley, Inc. Consulting Engineers Valcom Antenna Approval Request Page 3 The observed unattenuated field values of Valcom poles exceed those shown for their physical heights on the graph which appears as Figure 8 of Section 73.190 of the FCC Rules. Two aspects of their design are responsible for this, their Valcosphere top-loading and their loading coils that are situated far enough above ground to reduce the antenna-to ground voltage in the base region which, in turn, reduces dielectric losses in the nearby soil. The effects lead to antenna efficiency improvements that are predictable and measurable. The
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-146A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-146A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-146A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 C.F.R. � 1.1164. 47 C.F.R. � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 C.F.R. � 1.1166. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. (...continued from previous page) (continued....) Federal Communications Commission FCC 04-146 Federal Communications Commission FCC 04-146 �@��� �@��� > f � � 1 < = Y d e f g - � � � � � @� � � � � � gdm gdm hm hm hm hm hm hm hm hm hm h+ h�(
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-66A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-66A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-66A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 C.F.R. � 1.1164. 47 C.F.R. � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 C.F.R. � 1.1166. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. (continued....) Federal Communications Commission FCC 04-66 C X � (R) L - ! " A B C E F V W X Z [ � ... � � � � � (R) � � � � 3(R) � � hT h� h� h : D e q r s h� kd� \ $ $
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-137A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-137A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-137A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 CFR � 1.1164. 47 CFR � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 CFR � 1.1166. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. Note that "small fees" are collected in advance for the entire license term. Therefore, the annual fee amount shown in this table that is a small fee (categories 1 through 5) must be multiplied by the 5- or 10-year license term, as appropriate, to arrive at the total amount of regulatory fees owed. It
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-35A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-35A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-35A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 CFR � 1.1164. 47 CFR � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 CFR � 1.1166. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. (...continued from previous page) (continued....) Federal Communications Commission FCC 05-35 Federal Communications Commission FCC 05-35 �@��� �@��� �@��� �@��� �@��� . l '' � � - . 0 1 k l n o `` '' - - � � � � � � � hK h� hK hK hK hK hK hK hK hK
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-102A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-102A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-102A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 CFR � 1.1164. 47 CFR � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 CFR � 1.1166. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. Note that "small fees" are collected in advance for the entire license term. Therefore, the annual fee amount shown in this table that is a small fee (categories 1 through 5) must be multiplied by the 5- or 10-year license term, as appropriate, to arrive at the total amount of regulatory fees owed. It
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-38A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-38A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-06-38A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 CFR � 1.1164. 47 CFR � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 CFR � 1.1166. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. (...continued from previous page) (continued....) Federal Communications Commission FCC 06-38 Federal Communications Commission FCC 06-38 � �@��� ' V � � & ' ) * U V X Y tm � � � � � � � T h} h} Z' h[ h[ ? @ j� \ $ $ $ $ $ $ \
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-140A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-140A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-140A1.txt
  • due by the entity, amounts to less than $10. 47 C.F.R. � 1.1164. 47 C.F.R. � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 C.F.R. � 1.1166. 5 U.S.C. � 603. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. Note that "small fees" are collected in advance for the entire license term. Therefore, the annual fee amount shown in this table that is a small fee (categories 1 through 5) must be multiplied by the 5- or 10-year license term, as appropriate, to arrive at the total amount of regulatory fees owed. It
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-55A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-55A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-55A1.txt
  • due by the entity, amounts to less than $10. 47 CFR � 1.1164. 47 CFR � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 CFR � 1.1166. 5 U.S.C. � 603. 47 U.S.C. � 159(a). 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. (...continued from previous page) (continued....) Federal Communications Commission FCC 07-55 Federal Communications Commission FCC 07-55 � � ' � � ` ' '' � � � � � � � h� � w \ $ $ $ $ $ $ \ $ \ $ \ $ \ $ \ $ \ $ \ $
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-126A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-126A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-126A1.txt
  • for which payment is due by the entity, amounts to less than $10. 47 C.F.R. � 1.1164. 47 C.F.R. � 1.1164(c). Public Law 104-134, 110 Stat. 1321 (1996). 31 U.S.C. � 7701(c)(2)(B). 47 C.F.R. � 1.1166. 5 U.S.C. � 603. 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. (continued....) Federal Communications Commission FCC 08-126 Federal Communications Commission FCC 08-126 3 4 6 7 [ \ ^ _ z { } ~ 4 4 \ { � � ~ (R) � � � � � � � ��� � � v v ` � j� kd� $ $ $ $ $ $ $
• http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-182A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-182A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-08-182A1.txt
  • Administration and after opportunity for public comment, establishes one or more definitions of such term which are appropriate to the activities of the agency and publishes such definition(s) in the Federal Register.'' 15 U.S.C. � 632. 5 U.S.C. � 603. 47 C.F.R. �� 73.150 and 73.152. See Map of Estimated Effective Ground Conductivity in the United States, 47 C.F.R. � 73.190 Figure R3. 47 C.F.R. � 73.313. Note that "small fees" are collected in advance for the entire license term. Therefore, the annual fee amount shown in this table that is a small fee (categories 1 through 5) must be multiplied by the 5- or 10-year license term, as appropriate, to arrive at the total amount of regulatory fees owed. It
• http://www.fcc.gov/Bureaus/Mass_Media/Orders/1998/fcc98281.pdf
  • certify that it complies with the Commission's engineering standards and assignment requirements for AM stations. Applicants must submit and provide, as applicable, the following information: Top loaded or sectionalized antenna - Antenna must be fully described. Apparent electrical height values must be included. See 18 Sections 73.150 and 73.160. Non-directional Antenna- The theoretical efficiency based on Figure 8 of Section 73.190 and adjusted for ground losses must be submitted. Directional Antenna Specifications - Engineering data specified in Sections 73.150 or 73.152 must be submitted for each proposed directional antenna. Antenna Site Plat - Antenna Site Plat must clearly show the following items: -Boundary lines, roads, railroads, other obstructions, and the ground system or counterpoise. -Number and dimensions of ground radials or
• http://www.fcc.gov/Forms/Form301/301.pdf
  • complies with the Commission's engineering standards and assignment requirements for AM stations. Applicants must submit and provide, as applicable, the following information: Top loaded or sectionalized antenna - Antenna must be fully described. Apparent electrical height values must be included. See Sections 73.150 and 73.160. Non-directional Antenna - The theoretical efficiency (see Section 73.14) based on Figure 8 of Section 73.190 and adjusted for ground losses must be submitted. Directional Antenna Specifications - Engineering data specified in Sections 73.150 or 73.152 must be submitted for each proposed directional antenna. Antenna Site Plat - Antenna Site Plat must clearly show the following items: -Boundary lines, roads, railroads, other obstructions, and the ground system or counterpoise. -Number and dimensions of ground radials or
• http://www.fcc.gov/fcc-bin/audio/AMcriticalhours.html
  • and sunset, the extended skywave signal can be strong enough to interfere with other stations. This daytime skywave phenomenon was the focus of a protracted rulemaking proceeding that commenced in 1947 and finally culminated in 1959 with the adoption of [47]Section 73.187, Limitation on daytime radiation (also called the "critical hours" rule), and Figures 9, 10, and 11 in Section 73.190. See the Report and Order in Docket 8333, adopted September 18, 1959 [ [48]PDF ], petitions for reconsideration denied, adopted December 9, 1959 [ [49]PDF ]. The rule provides for operation at a lower power during critical hours time periods to limit interference from new or changed Class B or D stations (where the changes were made after 1959) operating
• http://www.fcc.gov/fcc-bin/audio/DA-03-832A1.doc http://www.fcc.gov/fcc-bin/audio/DA-03-832A1.pdf
  • 418 F.2d 1153 (D.C. Cir. 1969), cert. denied 409 U.S. 1027 (1972). 1998 Biennial Regulatory Review-Streamlining of Mass Media Applications, Rules and Processes, 13 FCC Rcd 23056 (1998), recons. granted in part and denied, 14 FCC Rcd 17525, 17541 (1999) (``Streamlining MO&O''). See Streamlining MO&O, 14 FCC Rcd at 17538-39. See 47 C.F.R. � 73.183. See also 47 C.F.R. � 73.190 (Figure R3, replicating Figure M3). Neither of the two remaining events warrants additional construction time. While our grant of additional time encompasses the period in which Salem's informal objection was under consideration, our action is not based on the informal objection. Such objections are not comparable to the type of administrative review that qualifies for tolling. Similarly, initial zoning is
• http://www.fcc.gov/fcc-bin/audio/alphaindex.html
  • Rcd 11479 [ [221]PDF ]. [222]Donor Acknowledgements,Enhanced Underwriting, and Program Related Materials -- Noncommercial Educational Stations only. [223]Doppler Shift Calculations, a Fortran CGI example (with code) [224]D [225]E [226]F [227]Early Radio -- Selected (scanned) documents from the early days of [228]AM and [229]FM radio.> [230]Educational (NCE) FM Mutually Exclusive Application Determinations [231]Efficiency Calculations for AM Stations using Figure 8, Section 73.190 [232]Efficiency of Transmission Line and Transmitter Power Output (TPO) Calculations for FM Stations [233]Electioneering Communications Database [234]Equal Employment Opportunity (EEO) information, from the Media Bureau's Equal Employment Opportunity Branch (Telephone : (202) 418 - 1450 ) * 1997 Broadcast and Cable Employment Report, released June 23, 1998 [ [235]Word Perfect 5.1 | [236]Text ] Summary of report of five year
• http://www.fcc.gov/fcc-bin/audio/am.html
  • Map) -- A Wall Map [120]Ground System Correction Factors for AM Nondirectional Stations [121]Groundwave Field Strength Graphs 1 - 20, 540 to 1700 kHz (Section [122]47 CFR 73.184) [123]How To Apply For A Broadcast Station -- General information [124]Inspections of Radio Installations -- Fact Sheet, from the [125]Enforcement Bureau [126]Inverse Distance Field Calculations for AM Stations -- Figure 8, Section 73.190 [127]Localism in broadcasting (Localism Task Force) Loop Antennas can improve AM radio reception, by increasing the received signal presented to the radio antenna, and by reducing interfering stations' received signal strengths. These can be commercially purchased or made inexpensively at home. Search for MW loop antenna or mediumwave loop antenna in your favorite Internet search engine to see the possibilities.
• http://www.fcc.gov/fcc-bin/audio/amfmrule.html
  • [150]PDF 73.182 Engineering standards of allocation. [151]TEXT [152]PDF 73.183 Groundwave signals. [153]TEXT [154]PDF 73.184 Groundwave field strength graphs. [ [155]Groundwave Field Strength Graphs ] [156]TEXT [157]PDF 73.185 Computation of interfering signal. [158]TEXT [159]PDF 73.186 Establishment of effective field at one kilometer. [160]TEXT [161]PDF 73.187 Limitation on daytime radiation. [162]TEXT [163]PDF 73.189 Minimum antenna heights or field strength requirements. [164]TEXT [165]PDF 73.190 Engineering charts and related formulas. Subpart B -- FM Broadcast Stations [166]TEXT [167]PDF 73.201 Numerical designation of FM broadcast channels. [ [168]Frequency/Channel Conversions ] [169]TEXT [170]PDF 73.202 Table of Allotments. [171]TEXT [172]PDF 73.203 Availability of channels. [173]TEXT [174]PDF 73.204 International agreements and other restrictions on use of channels. [175]TEXT [176]PDF 73.205 Zones. [177]TEXT [178]PDF 73.207 Minimum distance separation between stations.
• http://www.fcc.gov/fcc-bin/audio/amgnd.html
  • Content-Type: text/plain Content-Transfer-Encoding: 8bit [1]FCC Logo - Return to the FCC Home Page [2]Skip Primary FCC Navigation Links [3]FCC Home | [4]Search | [5]Updates | [6]E-Filing | [7]Initiatives | [8]For Consumers | [9]Find People Audio Division AM Ground System Correction Factors (202)-418-2700 [10]FCC > [11]MB > [12]Audio Division > [13]AM Ground Sys Correction [14]Figure 8, Sec. 73.190 [15]Skip Breadcrumb Site Navigation Links [16]FCC site map Fax: 202-418-1411 Search the FCC: __________________ Submit [17]Help | [18]Advanced [MB Shortcuts:........] Start Shortcut [19]Media Bureau Home [20]Bureau Documents [21]MB People MB Divisions [22]Office of the Bureau Chief [23]Audio Division [24]Video Division [25]Policy Division [26]Industry Analysis Division [27]Engineering Division [28]Office of Communication & Industry Information [29]Management and Resources Staff _________________________________________________________________ The Audio
• http://www.fcc.gov/fcc-bin/audio/figure8.html
  • Content-Type: text/plain Content-Transfer-Encoding: 8bit [1]FCC Logo - Return to the FCC Home Page [2]Skip Primary FCC Navigation Links [3]FCC Home | [4]Search | [5]Updates | [6]E-Filing | [7]Initiatives | [8]For Consumers | [9]Find People Audio Division Figure 8, Section 73.190 Calculations (202)-418-2700 [10]FCC > [11]MB > [12]Audio Division > [13]Figure 8, 47 CFR 73.190 [14]Skip Breadcrumb Site Navigation Links [15]FCC site map Fax: 202-418-1411 Search the FCC: __________________ Submit [16]Help | [17]Advanced [MB Shortcuts:........] Start Shortcut [18]Media Bureau Home [19]Bureau Documents [20]MB People MB Divisions [21]Office of the Bureau Chief [22]Audio Division [23]Video Division [24]Policy Division [25]Industry Analysis Division [26]Engineering
• http://www.fcc.gov/fcc-bin/audio/howtoapply.html
  • CFR 73.182(s) (for example 2 x 800 kHz = 1600 kHz for the second harmonic relationship; or 800 kHz + 455 kHz IF frequency could affect reception on 1250 and 1260 kHz). In general, these complex engineering analyses require specialized knowledge and software, and are best performed by broadcast engineering consultants. Rules. AM station rules include 47 CFR 73.1 through 73.190, and 73.1001 through 73.5009. These rules may be retrieved at [68]http://www.fcc.gov/fcc-bin/audio/amfmrule.html or obtained from the Government Printing Office at the location listed in the Introduction above. Form to Use, Application Filing Fee. Applications for new AM broadcast stations must be electronically filed on FCC Form 301 during a specified application window period. Noncommercial educational applicants should also use FCC Form
• http://www.fcc.gov/fcc-bin/audio/m3index.html
  • call (202)-418-2662 [42]CDBS System Status [43]Call Sign Reservations & Authorizations for broadcast station call signs [44]Antenna Structure Registration via ULS [45]Visit the FirstGov Portal Easy, one-stop access to all online U.S. Federal Government resources [46]www.USA.gov [Quick Links to Audio Division Information................] Retrieve M3 Map of Effective Ground Conductivity in the USA (A Wall Sized Map) Figure R3 of [47]47 CFR 73.190 of the Commission's Rules contains a map of the estimated effective ground conductivity in the United States. This data is used to predict the propagation of AM signals across the United States. A higher ground conductivity indicates better AM propagation characteristics. The maps below show that the ground conductivity in the U.S. ranges between 0.5 and 30 millimhos per meter.
• http://www.fcc.gov/ftp/Bureaus/MB/Databases/critical_hours_graphs/Figure10.pdf
  • 120 240 300 70 110 250 290 80 100 260 280 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 Distance from 0.1 mV/m Contour in Miles Millivolts per meter at 1 mile - mV/m @ 1 mi Azimuth Figure 10, Section 73.190 Azimuth Permissible Daytime Radiation for Class B or Class D Stations Subject To Section 73.187 1000 kHz
• http://www.fcc.gov/ftp/Bureaus/MB/Databases/critical_hours_graphs/Figure10metric.pdf
  • 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 Distance from 0.1 mV/m Contour in Kilometers Millivolts per meter at 1 kilometer - mV/m @ 1 km Azimuth Figure 10, Section 73.190 Azimuth Permissible Daytime Radiation for Class B or Class D Stations Subject To Section 73.187 1000 kHz
• http://www.fcc.gov/ftp/Bureaus/MB/Databases/critical_hours_graphs/Figure11.pdf
  • 120 240 300 70 110 250 290 80 100 260 280 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 Distance from 0.1 mV/m Contour in Miles Millivolts per meter at 1 mile - mV/m @ 1 mi Azimuth Figure 11, Section 73.190 Azimuth Permissible Daytime Radiation for Class B or Class D Stations Subject To Section 73.187 1600 kHz
• http://www.fcc.gov/ftp/Bureaus/MB/Databases/critical_hours_graphs/Figure11metric.pdf
  • 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 Distance from 0.1 mV/m Contour in Kilometers Millivolts per meter at 1 kilometer - mV/m @ 1 km Azimuth Figure 11, Section 73.190 Azimuth Permissible Daytime Radiation for Class B or Class D Stations Subject To Section 73.187 1600 kHz
• http://www.fcc.gov/ftp/Bureaus/MB/Databases/critical_hours_graphs/Figure9.pdf
  • 140 220 320 50 130 230 310 60 120 240 300 70 110 250 290 80 100 260 280 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 Distance from 0.1 mV/m Contour in Miles Millivolts per meter at 1 mile - mV/m @ 1 mi Azimuth Figure 9, Section 73.190 Azimuth Permissible Daytime Radiation for Class B or Class D Stations Subject To Section 73.187 500 kHz
• http://www.fcc.gov/ftp/Bureaus/Mass_Media/Databases/documents_collection/AttachB-04-18-1997.html
  • is "B"; and the Stereo box must be checked. Leave the Mono box blank. * Question 4 is self-explanatory and should be answered completely. * Question 5 is self-explanatory and should be answered completely. * Question 6. Antenna System. If non-directional, in the Non-Directional Section check both the Day and Night boxes and fill in the estimated efficiency based on 73.190, Figure 8. There is no critical hours operation in the expanded band so do not check that box. For the Non- Directional/ Directional section of Question 6, check the method of excitation and complete the tower height information table for the expanded band tower only. * Question 7 must be answered only if a new site and/or new tower construction
• http://www.fcc.gov/mb/audio/alphaindex.html
  • Rcd 11479 [ [221]PDF ]. [222]Donor Acknowledgements,Enhanced Underwriting, and Program Related Materials -- Noncommercial Educational Stations only. [223]Doppler Shift Calculations, a Fortran CGI example (with code) [224]D [225]E [226]F [227]Early Radio -- Selected (scanned) documents from the early days of [228]AM and [229]FM radio.> [230]Educational (NCE) FM Mutually Exclusive Application Determinations [231]Efficiency Calculations for AM Stations using Figure 8, Section 73.190 [232]Efficiency of Transmission Line and Transmitter Power Output (TPO) Calculations for FM Stations [233]Electioneering Communications Database [234]Equal Employment Opportunity (EEO) information, from the Media Bureau's Equal Employment Opportunity Branch (Telephone : (202) 418 - 1450 ) * 1997 Broadcast and Cable Employment Report, released June 23, 1998 [ [235]Word Perfect 5.1 | [236]Text ] Summary of report of five year
• http://www.fcc.gov/mb/audio/alphaindex_printable.html
  • Rcd 11479 [ [174]PDF ]. [175]Donor Acknowledgements,Enhanced Underwriting, and Program Related Materials -- Noncommercial Educational Stations only. [176]Doppler Shift Calculations, a Fortran CGI example (with code) [177]D [178]E [179]F [180]Early Radio -- Selected (scanned) documents from the early days of [181]AM and [182]FM radio.> [183]Educational (NCE) FM Mutually Exclusive Application Determinations [184]Efficiency Calculations for AM Stations using Figure 8, Section 73.190 [185]Efficiency of Transmission Line and Transmitter Power Output (TPO) Calculations for FM Stations [186]Electioneering Communications Database [187]Equal Employment Opportunity (EEO) information, from the Media Bureau's Equal Employment Opportunity Branch (Telephone : (202) 418 - 1450 ) * 1997 Broadcast and Cable Employment Report, released June 23, 1998 [ [188]Word Perfect 5.1 | [189]Text ] Summary of report of five year
• http://www.fcc.gov/mb/audio/amgnd.html
  • Content-Type: text/plain Content-Transfer-Encoding: 8bit [1]FCC Logo - Return to the FCC Home Page [2]Skip Primary FCC Navigation Links [3]FCC Home | [4]Search | [5]Updates | [6]E-Filing | [7]Initiatives | [8]For Consumers | [9]Find People Audio Division AM Ground System Correction Factors (202)-418-2700 [10]FCC > [11]MB > [12]Audio Division > [13]AM Ground Sys Correction [14]Figure 8, Sec. 73.190 [15]Skip Breadcrumb Site Navigation Links [16]FCC site map Fax: 202-418-1411 Search the FCC: __________________ Submit [17]Help | [18]Advanced [MB Shortcuts:........] Start Shortcut [19]Media Bureau Home [20]Bureau Documents [21]MB People MB Divisions [22]Office of the Bureau Chief [23]Audio Division [24]Video Division [25]Policy Division [26]Industry Analysis Division [27]Engineering Division [28]Office of Communication & Industry Information [29]Management and Resources Staff _________________________________________________________________ The Audio
• http://www.fcc.gov/mb/audio/bickel/AMcriticalhours.html
  • and sunset, the extended skywave signal can be strong enough to interfere with other stations. This daytime skywave phenomenon was the focus of a protracted rulemaking proceeding that commenced in 1947 and finally culminated in 1959 with the adoption of [47]Section 73.187, Limitation on daytime radiation (also called the "critical hours" rule), and Figures 9, 10, and 11 in Section 73.190. See the Report and Order in Docket 8333, adopted September 18, 1959 [ [48]PDF ], petitions for reconsideration denied, adopted December 9, 1959 [ [49]PDF ]. The rule provides for operation at a lower power during critical hours time periods to limit interference from new or changed Class B or D stations (where the changes were made after 1959) operating
• http://www.fcc.gov/mb/audio/bickel/amfmrule.html
  • [150]PDF 73.182 Engineering standards of allocation. [151]TEXT [152]PDF 73.183 Groundwave signals. [153]TEXT [154]PDF 73.184 Groundwave field strength graphs. [ [155]Groundwave Field Strength Graphs ] [156]TEXT [157]PDF 73.185 Computation of interfering signal. [158]TEXT [159]PDF 73.186 Establishment of effective field at one kilometer. [160]TEXT [161]PDF 73.187 Limitation on daytime radiation. [162]TEXT [163]PDF 73.189 Minimum antenna heights or field strength requirements. [164]TEXT [165]PDF 73.190 Engineering charts and related formulas. Subpart B -- FM Broadcast Stations [166]TEXT [167]PDF 73.201 Numerical designation of FM broadcast channels. [ [168]Frequency/Channel Conversions ] [169]TEXT [170]PDF 73.202 Table of Allotments. [171]TEXT [172]PDF 73.203 Availability of channels. [173]TEXT [174]PDF 73.204 International agreements and other restrictions on use of channels. [175]TEXT [176]PDF 73.205 Zones. [177]TEXT [178]PDF 73.207 Minimum distance separation between stations.
• http://www.fcc.gov/mb/audio/decdoc/letter/1997--04--18--attachB.html
  • is "B"; and the Stereo box must be checked. Leave the Mono box blank. * Question 4 is self-explanatory and should be answered completely. * Question 5 is self-explanatory and should be answered completely. * Question 6. Antenna System. If non-directional, in the Non-Directional Section check both the Day and Night boxes and fill in the estimated efficiency based on 73.190, Figure 8. There is no critical hours operation in the expanded band so do not check that box. For the Non- Directional/ Directional section of Question 6, check the method of excitation and complete the tower height information table for the expanded band tower only. * Question 7 must be answered only if a new site and/or new tower construction
• http://www.fcc.gov/mb/audio/howtoapply.html
  • CFR 73.182(s) (for example 2 x 800 kHz = 1600 kHz for the second harmonic relationship; or 800 kHz + 455 kHz IF frequency could affect reception on 1250 and 1260 kHz). In general, these complex engineering analyses require specialized knowledge and software, and are best performed by broadcast engineering consultants. Rules. AM station rules include 47 CFR 73.1 through 73.190, and 73.1001 through 73.5009. These rules may be retrieved at [68]http://www.fcc.gov/fcc-bin/audio/amfmrule.html or obtained from the Government Printing Office at the location listed in the Introduction above. Form to Use, Application Filing Fee. Applications for new AM broadcast stations must be electronically filed on FCC Form 301 during a specified application window period. Noncommercial educational applicants should also use FCC Form
• http://www.fcc.gov/mb/audio/includes/63-amfmrule.htm
  • [103]PDF 73.182 Engineering standards of allocation. [104]TEXT [105]PDF 73.183 Groundwave signals. [106]TEXT [107]PDF 73.184 Groundwave field strength graphs. [ [108]Groundwave Field Strength Graphs ] [109]TEXT [110]PDF 73.185 Computation of interfering signal. [111]TEXT [112]PDF 73.186 Establishment of effective field at one kilometer. [113]TEXT [114]PDF 73.187 Limitation on daytime radiation. [115]TEXT [116]PDF 73.189 Minimum antenna heights or field strength requirements. [117]TEXT [118]PDF 73.190 Engineering charts and related formulas. Subpart B -- FM Broadcast Stations [119]TEXT [120]PDF 73.201 Numerical designation of FM broadcast channels. [ [121]Frequency/Channel Conversions ] [122]TEXT [123]PDF 73.202 Table of Allotments. [124]TEXT [125]PDF 73.203 Availability of channels. [126]TEXT [127]PDF 73.204 International agreements and other restrictions on use of channels. [128]TEXT [129]PDF 73.205 Zones. [130]TEXT [131]PDF 73.207 Minimum distance separation between stations.
• http://www.fcc.gov/mb/audio/includes/80-howtoapply.htm
  • CFR 73.182(s) (for example 2 x 800 kHz = 1600 kHz for the second harmonic relationship; or 800 kHz + 455 kHz IF frequency could affect reception on 1250 and 1260 kHz). In general, these complex engineering analyses require specialized knowledge and software, and are best performed by broadcast engineering consultants. Rules. AM station rules include 47 CFR 73.1 through 73.190, and 73.1001 through 73.5009. These rules may be retrieved at [22]http://www.fcc.gov/fcc-bin/audio/amfmrule.html or obtained from the Government Printing Office at the location listed in the Introduction above. Form to Use, Application Filing Fee. Applications for new AM broadcast stations must be electronically filed on FCC Form 301 during a specified application window period. Noncommercial educational applicants should also use FCC Form
• http://www.fcc.gov/mb/audio/m3/index.html
  • call (202)-418-2662 [42]CDBS System Status [43]Call Sign Reservations & Authorizations for broadcast station call signs [44]Antenna Structure Registration via ULS [45]Visit the FirstGov Portal Easy, one-stop access to all online U.S. Federal Government resources [46]www.USA.gov [Quick Links to Audio Division Information................] Retrieve M3 Map of Effective Ground Conductivity in the USA (A Wall Sized Map) Figure R3 of [47]47 CFR 73.190 of the Commission's Rules contains a map of the estimated effective ground conductivity in the United States. This data is used to predict the propagation of AM signals across the United States. A higher ground conductivity indicates better AM propagation characteristics. The maps below show that the ground conductivity in the U.S. ranges between 0.5 and 30 millimhos per meter.
• http://www.fcc.gov/mb/audio/main/am.html
  • Map) -- A Wall Map [120]Ground System Correction Factors for AM Nondirectional Stations [121]Groundwave Field Strength Graphs 1 - 20, 540 to 1700 kHz (Section [122]47 CFR 73.184) [123]How To Apply For A Broadcast Station -- General information [124]Inspections of Radio Installations -- Fact Sheet, from the [125]Enforcement Bureau [126]Inverse Distance Field Calculations for AM Stations -- Figure 8, Section 73.190 [127]Localism in broadcasting (Localism Task Force) Loop Antennas can improve AM radio reception, by increasing the received signal presented to the radio antenna, and by reducing interfering stations' received signal strengths. These can be commercially purchased or made inexpensively at home. Search for MW loop antenna or mediumwave loop antenna in your favorite Internet search engine to see the possibilities.