Federal regulations · Through 2026-08-25 · Newer source version available

47 CFR 87.475: Frequencies.

(a) Frequency coordination. The Commission will assign frequencies to radionavigation land stations and radionavigation land test stations after coordination with the FAA. The applicant must notify the appropriate Regional Office of the FAA prior to submission to the Commission of an application for a new station or for modification of an existing station to change frequency, power, location or emission. Each application must include the FAA Regional Office notified and date of notification.
(b) Frequencies available for radionavigation land stations. (1) LORAN-C is a long range navigation system which operates in the 90-110 kHz band.
(2) Radiobeacon stations enable an aircraft station to determine bearing or direction in relation to the radiobeacon station. Radiobeacons operate in the bands 190-285 kHz; 325-435 kHz; 510-525 kHz; and 525-535 kHz. Radiobeacons may be authorized, primarily for off-shore use, in the band 525-535 kHz on a non-interference basis to travelers information stations.
(3) Aeronautical marker beacon stations radiate a vertical distinctive pattern on 75 MHz which provides position information to aircraft.
(4) The following table lists the specific frequencies in the 108.100-111.950 MHz band which are assignable to localizer stations with simultaneous radiotelephone channels and their associated glide path station frequency from the 328.600-335.400 MHz band.
Localizer (MHz) Glide path (MHz)
108.100 334.700
108.150 334.550
108.300 334.100
108.350 333.950
108.500 329.900
108.550 329.750
108.700 330.500
108.750 330.350
108.900 329.300
108.950 329.150
109.100 331.400
109.150 331.250
109.300 332.000
109.350 331.850
109.500 332.600
109.550 332.450
109.700 333.200
109.750 333.050
109.900 333.800
109.950 333.650
110.100 334.400
110.150 334.250
110.300 335.000
110.350 334.850
110.500 329.600
110.550 329.450
110.700 330.200
110.750 330.050
110.900 330.800
110.950 330.650
111.100 331.700
111.150 331.550
111.300 332.300
111.350 332.150
111.500 332.900
111.550 332.750
111.700 333.500
111.750 333.350
111.900 331.100
111.950 330.950
(5) VHF omni-range (VOR) stations are to be assigned frequencies in the 112.050-117.950 MHz band (50 kHz channel spacing) and the following frequencies in the 108-112 MHz band:
108.200
108.250
108.400
108.450
108.600
108.650
108.800
108.850
109.000
109.050
109.200
109.250
109.400
109.450
109.600
109.650
109.800
109.850
110.000
110.050
110.200
110.250
110.400
110.450
110.600
110.650
110.800
110.850
111.000
111.050
111.200
111.250
111.400
111.450
111.600
111.650
111.800
111.850
112.000
(6) The band 960-1215 MHz is available for the use of land stations and associated airborne electronic aids to air navigation. When distance measuring equipment (DME) is intended to operate with a single VHF navigation station in the 108-117.975 MHz band, the DME operating channel must be paired with the VHF channel as shown in the following table:
DME Channeling and Pairing
[MHz]
VHF channel Airborne interrogating frequency Ground reply frequency
108.000 1041.000 978.000
108.050 1041.000 1104.000
108.100 1042.000 979.000
108.150 1042.000 1105.000
108.200 1043.000 980.000
108.250 1043.000 1106.000
108.300 1044.000 981.000
108.350 1044.000 1107.000
108.400 1045.000 982.000
108.450 1045.000 1108.000
108.500 1046.000 983.000
108.550 1046.000 1109.000
108.600 1047.000 984.000
108.650 1047.000 1110.000
108.700 1048.000 985.000
108.750 1048.000 1111.000
108.800 1049.000 986.000
108.850 1049.000 1112.000
108.900 1050.000 987.000
108.950 1050.000 1113.000
109.000 1051.000 988.000
109.050 1051.000 1114.000
109.100 1052.000 989.000
109.150 1052.000 1115.000
109.200 1053.000 990.000
109.250 1053.000 1116.000
109.300 1054.000 991.000
109.350 1054.000 1117.000
109.400 1055.000 992.000
109.450 1055.000 1118.000
109.500 1056.000 993.000
109.550 1056.000 1119.000
109.600 1057.000 994.000
109.650 1057.000 1120.000
109.700 1058.000 995.000
109.750 1058.000 1121.000
109.800 1059.000 996.000
109.850 1059.000 1122.000
109.900 1060.000 997.000
109.950 1060.000 1123.000
110.000 1061.000 998.000
110.050 1061.000 1124.000
110.100 1062.000 999.000
110.150 1062.000 1125.000
110.200 1063.000 1000.000
110.250 1063.000 1126.000
110.300 1064.000 1001.000
110.350 1064.000 1127.000
110.400 1065.000 1002.000
110.450 1065.000 1128.000
110.500 1066.000 1003.000
110.550 1066.000 1129.000
110.600 1067.000 1004.000
110.650 1067.000 1130.000
110.700 1068.000 1005.000
110.750 1068.000 1131.000
110.800 1069.000 1006.000
110.850 1069.000 1132.000
110.900 1070.000 1007.000
110.950 1070.000 1133.000
111.000 1071.000 1008.000
111.050 1071.000 1134.000
111.100 1072.000 1009.000
111.150 1072.000 1135.000
111.200 1073.000 1010.000
111.250 1073.000 1136.000
111.300 1074.000 1011.000
111.350 1074.000 1137.000
111.400 1075.000 1012.000
111.450 1075.000 1138.000
111.500 1076.000 1013.000
111.550 1076.000 1139.000
111.600 1077.000 1014.000
111.650 1077.000 1140.000
111.700 1078.000 1015.000
111.750 1078.000 1141.000
111.800 1079.000 1016.000
111.850 1079.000 1142.000
111.900 1080.000 1017.000
111.950 1080.000 1143.000
112.000 1081.000 1018.000
112.050 1081.000 1144.000
112.100 1082.000 1019.000
112.150 1082.000 1145.000
112.200 1083.000 1020.000
112.250 1083.000 1146.000
112.300 1094.000 1157.000
112.350 1094.000 1031.000
112.400 1095.000 1158.000
112.450 1095.000 1032.000
112.500 1096.000 1159.000
112.550 1096.000 1033.000
112.600 1097.000 1160.000
112.650 1097.000 1034.000
112.700 1098.000 1161.000
112.750 1098.000 1035.000
112.800 1099.000 1162.000
112.850 1099.000 1036.000
112.900 1100.000 1163.000
112.950 1100.000 1037.000
113.000 1101.000 1164.000
113.050 1101.000 1038.000
113.100 1102.000 1165.000
113.150 1102.000 1039.000
113.200 1103.000 1166.000
113.250 1103.000 1040.000
113.300 1104.000 1167.000
113.350 1104.000 1041.000
113.400 1105.000 1168.000
113.450 1105.000 1042.000
113.500 1106.000 1169.000
113.550 1106.000 1043.000
113.600 1107.000 1170.000
113.650 1107.000 1044.000
113.700 1108.000 1171.000
113.750 1108.000 1045.000
113.800 1109.000 1172.000
113.850 1109.000 1046.000
113.900 1110.000 1173.000
113.950 1110.000 1047.000
114.000 1111.000 1174.000
114.050 1111.000 1048.000
114.100 1112.000 1175.000
114.150 1112.000 1049.000
114.200 1113.000 1176.000
114.250 1113.000 1050.000
114.300 1114.000 1177.000
114.350 1114.000 1051.000
114.400 1115.000 1178.000
114.450 1115.000 1052.000
114.500 1116.000 1179.000
114.550 1116.000 1053.000
114.600 1117.000 1180.000
114.650 1117.000 1054.000
114.700 1118.000 1181.000
114.750 1118.000 1055.000
114.800 1119.000 1182.000
114.850 1119.000 1056.000
114.900 1120.000 1183.000
114.950 1120.000 1057.000
115.000 1121.000 1184.000
115.050 1121.000 1058.000
115.100 1122.000 1185.000
115.150 1122.000 1059.000
115.200 1123.000 1186.000
115.250 1123.000 1060.000
115.300 1124.000 1187.000
115.350 1124.000 1061.000
115.400 1125.000 1188.000
115.450 1125.000 1062.000
115.500 1126.000 1189.000
115.550 1126.000 1063.000
115.600 1127.000 1190.000
115.650 1127.000 1064.000
115.700 1128.000 1191.000
115.750 1128.000 1065.000
115.800 1129.000 1192.000
115.850 1129.000 1066.000
115.900 1130.000 1193.000
115.950 1130.000 1067.000
116.000 1131.000 1194.000
116.050 1131.000 1068.000
116.100 1132.000 1195.000
116.150 1132.000 1069.000
116.200 1133.000 1196.000
116.250 1133.000 1070.000
116.300 1134.000 1197.000
116.350 1134.000 1071.000
116.400 1135.000 1198.000
116.450 1135.000 1072.000
116.500 1136.000 1199.000
116.550 1136.000 1073.000
116.600 1137.000 1200.000
116.650 1137.000 1074.000
116.700 1138.000 1201.000
116.750 1138.000 1075.000
116.800 1139.000 1202.000
116.850 1139.000 1076.000
116.900 1140.000 1203.000
116.950 1140.000 1077.000
117.000 1141.000 1204.000
117.050 1141.000 1078.000
117.100 1142.000 1205.000
117.150 1142.000 1079.000
117.200 1143.000 1206.000
117.250 1143.000 1080.000
117.300 1144.000 1207.000
117.350 1144.000 1081.000
117.400 1145.000 1208.000
117.450 1145.000 1082.000
117.500 1146.000 1209.000
117.550 1146.000 1083.000
117.600 1147.000 1210.000
117.650 1147.000 1084.000
117.700 1148.000 1211.000
117.750 1148.000 1085.000
117.800 1149.000 1212.000
117.850 1149.000 1086.000
117.900 1150.000 1213.000
117.950 1150.000 1087.000
(7) 978.0 MHz is authorized for Universal Access Transceiver service.
(8) 1300-1350 MHz: The use of this band is restricted to surveillance radar stations and associated airborne transponders.
(9) 1559-1626.5 MHz: The use of this band is limited to airborne electronic aids to air navigation and any associated land stations.
(10) 2700-2900 MHz: Non-Government land-based radars may be licensed. U.S. Government coordination is required. Applicants must demonstrate a need for the service which the Government is not prepared to render.
(11) 5000-5250 MHz: This band is to be used for the operation of the international standard system (microwave landing system).
(12) 9000-9200 MHz: This band is available to land-based radars. Stations operating in this band may receive interference from stations operating in the radiolocation service.
(13) 15,400-15,700 MHz: This band is available for use of land stations associated with airborne electronic aids to air navigation.
(14) 24,250-25,250, 32,300-33,400 MHz: In these bands, land-based radionavigation aids are permitted where they operate with airborne radionavigation devices.
(c) Frequencies available for radionavigation land test stations. (1) The frequencies set forth in §§ 87.187(c), (e) through (j), (r), (t), and (ff); and 87.475(b)(6) through (b)(11) may be assigned to radionavigation land test stations for the testing of aircraft transmitting equipment that normally operate on these frequencies and for the testing of land-based receiving equipment that operate with airborne radionavigation equipment.
(2) The frequencies available for assignment to radionavigation land test stations for the testing of airborne receiving equipment are 108.000 and 108.050 MHz for VHF omni-range; 108.100 and 108.150 MHz for localizer; 334.550 and 334.700 MHz for glide slope; 978 and 979 MHz (X channel)/1104 MHz (Y channel) for DME; 978 MHz for Universal Access Transceiver; 1030 MHz for air traffic control radar beacon transponders; 1090 MHz for Traffic Alert and Collision Avoidance Systems (TCAS); and 5031.0 MHz for microwave landing systems. Additionally, the frequencies in paragraph (b) of this section may be assigned to radionavigation land test stations after coordination with the FAA. The following conditions apply:after coordination with the FAA. The following conditions apply:
(i) The maximum power authorized on the frequencies 108.150 and 334.550 MHz is 1 milliwatt. The maximum power authorized on all other frequencies is one watt.
(ii) The pulse repetition rate (PRR) of the 1030 MHz ATC radar beacon test set will be 235 pulses per second (pps) ±5pps.
(iii) The assignment of 108.000 MHz is subject to the condition that no interference will be caused to the reception of FM broadcasting stations and stations using the frequency are not protected against interference from FM broadcasting stations.
(d) Frequencies available for ELT test stations. The frequencies available for assignment to ELT test stations are 121.600, 121.650, 121.700, 121.750, 121.800, 121.850, and 121.900 MHz. Licensees must:
(1) Not cause harmful interference to voice communications on these frequencies or any harmonically related frequency.
(2) Coordinate with the appropriate FAA Regional Spectrum Management Office prior to each activation of the transmitter.
(e) Frequencies available for differential GPS stations. Frequencies in the 112-118 MHz band may be assigned to Special Category I (SCAT-I) ground stations for differential GPS data links.
(1) The frequencies available are on 25 kHz centers with the lowest assignable frequency being centered at 112.000 MHz and the highest assignable frequency being centered at 117.950 MHz.
(2) Applicants must coordinate a frequency, time slot assignment, and three-letter identifier with the FAA and provide this information to the Commission upon application.

Where this section sits in the code

Title 47—Telecommunication
CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION
SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES
PART 87—AVIATION SERVICES
Subpart Q—Stations in the Radiodetermination Service

(b) Frequencies available for radionavigation land stations. (1) LORAN-C is a long range navigation system which operates in the 90-110 kHz band.

(2) Radiobeacon stations enable an aircraft station to determine bearing or direction in relation to the radiobeacon station. Radiobeacons operate in the bands 190-285 kHz; 325-435 kHz; 510-525 kHz; and 525-535 kHz. Radiobeacons may be authorized, primarily for off-shore use, in the band 525-535 kHz on a non-interference basis to travelers information stations.

(3) Aeronautical marker beacon stations radiate a vertical distinctive pattern on 75 MHz which provides position information to aircraft.

(4) The following table lists the specific frequencies in the 108.100-111.950 MHz band which are assignable to localizer stations with simultaneous radiotelephone channels and their associated glide path station frequency from the 328.600-335.400 MHz band.

Localizer (MHz) Glide path (MHz)

108.100 334.700

108.150 334.550

108.300 334.100

108.350 333.950

108.500 329.900

108.550 329.750

108.700 330.500

108.750 330.350

108.900 329.300

108.950 329.150

109.100 331.400

109.150 331.250

109.300 332.000

109.350 331.850

109.500 332.600

109.550 332.450

109.700 333.200

109.750 333.050

109.900 333.800

109.950 333.650

110.100 334.400

110.150 334.250

110.300 335.000

110.350 334.850

110.500 329.600

110.550 329.450

110.700 330.200

110.750 330.050

110.900 330.800

110.950 330.650

111.100 331.700

111.150 331.550

111.300 332.300

111.350 332.150

111.500 332.900

111.550 332.750

111.700 333.500

111.750 333.350

111.900 331.100

111.950 330.950

(5) VHF omni-range (VOR) stations are to be assigned frequencies in the 112.050-117.950 MHz band (50 kHz channel spacing) and the following frequencies in the 108-112 MHz band:

108.200

108.250

108.400

108.450

108.600

108.650

108.800

108.850

109.000

109.050

109.200

109.250

109.400

109.450

109.600

109.650

109.800

109.850

110.000

110.050

110.200

110.250

110.400

110.450

110.600

110.650

110.800

110.850

111.000

111.050

111.200

111.250

111.400

111.450

111.600

111.650

111.800

111.850

112.000

(6) The band 960-1215 MHz is available for the use of land stations and associated airborne electronic aids to air navigation. When distance measuring equipment (DME) is intended to operate with a single VHF navigation station in the 108-117.975 MHz band, the DME operating channel must be paired with the VHF channel as shown in the following table:

DME Channeling and Pairing

[MHz]

VHF channel Airborne interrogating frequency Ground reply frequency

108.000 1041.000 978.000

108.050 1041.000 1104.000

108.100 1042.000 979.000

108.150 1042.000 1105.000

108.200 1043.000 980.000

108.250 1043.000 1106.000

108.300 1044.000 981.000

108.350 1044.000 1107.000

108.400 1045.000 982.000

108.450 1045.000 1108.000

108.500 1046.000 983.000

108.550 1046.000 1109.000

108.600 1047.000 984.000

108.650 1047.000 1110.000

108.700 1048.000 985.000

108.750 1048.000 1111.000

108.800 1049.000 986.000

108.850 1049.000 1112.000

108.900 1050.000 987.000

108.950 1050.000 1113.000

109.000 1051.000 988.000

109.050 1051.000 1114.000

109.100 1052.000 989.000

109.150 1052.000 1115.000

109.200 1053.000 990.000

109.250 1053.000 1116.000

109.300 1054.000 991.000

109.350 1054.000 1117.000

109.400 1055.000 992.000

109.450 1055.000 1118.000

109.500 1056.000 993.000

109.550 1056.000 1119.000

109.600 1057.000 994.000

109.650 1057.000 1120.000

109.700 1058.000 995.000

109.750 1058.000 1121.000

109.800 1059.000 996.000

109.850 1059.000 1122.000

109.900 1060.000 997.000

109.950 1060.000 1123.000

110.000 1061.000 998.000

110.050 1061.000 1124.000

110.100 1062.000 999.000

110.150 1062.000 1125.000

110.200 1063.000 1000.000

110.250 1063.000 1126.000

110.300 1064.000 1001.000

110.350 1064.000 1127.000

110.400 1065.000 1002.000

110.450 1065.000 1128.000

110.500 1066.000 1003.000

110.550 1066.000 1129.000

110.600 1067.000 1004.000

110.650 1067.000 1130.000

110.700 1068.000 1005.000

110.750 1068.000 1131.000

110.800 1069.000 1006.000

110.850 1069.000 1132.000

110.900 1070.000 1007.000

110.950 1070.000 1133.000

111.000 1071.000 1008.000

111.050 1071.000 1134.000

111.100 1072.000 1009.000

111.150 1072.000 1135.000

111.200 1073.000 1010.000

111.250 1073.000 1136.000

111.300 1074.000 1011.000

111.350 1074.000 1137.000

111.400 1075.000 1012.000

111.450 1075.000 1138.000

111.500 1076.000 1013.000

111.550 1076.000 1139.000

111.600 1077.000 1014.000

111.650 1077.000 1140.000

111.700 1078.000 1015.000

111.750 1078.000 1141.000

111.800 1079.000 1016.000

111.850 1079.000 1142.000

111.900 1080.000 1017.000

111.950 1080.000 1143.000

112.000 1081.000 1018.000

112.050 1081.000 1144.000

112.100 1082.000 1019.000

112.150 1082.000 1145.000

112.200 1083.000 1020.000

112.250 1083.000 1146.000

112.300 1094.000 1157.000

112.350 1094.000 1031.000

112.400 1095.000 1158.000

112.450 1095.000 1032.000

112.500 1096.000 1159.000

112.550 1096.000 1033.000

112.600 1097.000 1160.000

112.650 1097.000 1034.000

112.700 1098.000 1161.000

112.750 1098.000 1035.000

112.800 1099.000 1162.000

112.850 1099.000 1036.000

112.900 1100.000 1163.000

112.950 1100.000 1037.000

113.000 1101.000 1164.000

113.050 1101.000 1038.000

113.100 1102.000 1165.000

113.150 1102.000 1039.000

113.200 1103.000 1166.000

113.250 1103.000 1040.000

113.300 1104.000 1167.000

113.350 1104.000 1041.000

113.400 1105.000 1168.000

113.450 1105.000 1042.000

113.500 1106.000 1169.000

113.550 1106.000 1043.000

113.600 1107.000 1170.000

113.650 1107.000 1044.000

113.700 1108.000 1171.000

113.750 1108.000 1045.000

113.800 1109.000 1172.000

113.850 1109.000 1046.000

113.900 1110.000 1173.000

113.950 1110.000 1047.000

114.000 1111.000 1174.000

114.050 1111.000 1048.000

114.100 1112.000 1175.000

114.150 1112.000 1049.000

114.200 1113.000 1176.000

114.250 1113.000 1050.000

114.300 1114.000 1177.000

114.350 1114.000 1051.000

114.400 1115.000 1178.000

114.450 1115.000 1052.000

114.500 1116.000 1179.000

114.550 1116.000 1053.000

114.600 1117.000 1180.000

114.650 1117.000 1054.000

114.700 1118.000 1181.000

114.750 1118.000 1055.000

114.800 1119.000 1182.000

114.850 1119.000 1056.000

114.900 1120.000 1183.000

114.950 1120.000 1057.000

115.000 1121.000 1184.000

115.050 1121.000 1058.000

115.100 1122.000 1185.000

115.150 1122.000 1059.000

115.200 1123.000 1186.000

115.250 1123.000 1060.000

115.300 1124.000 1187.000

115.350 1124.000 1061.000

115.400 1125.000 1188.000

115.450 1125.000 1062.000

115.500 1126.000 1189.000

115.550 1126.000 1063.000

115.600 1127.000 1190.000

115.650 1127.000 1064.000

115.700 1128.000 1191.000

115.750 1128.000 1065.000

115.800 1129.000 1192.000

115.850 1129.000 1066.000

115.900 1130.000 1193.000

115.950 1130.000 1067.000

116.000 1131.000 1194.000

116.050 1131.000 1068.000

116.100 1132.000 1195.000

116.150 1132.000 1069.000

116.200 1133.000 1196.000

116.250 1133.000 1070.000

116.300 1134.000 1197.000

116.350 1134.000 1071.000

116.400 1135.000 1198.000

116.450 1135.000 1072.000

116.500 1136.000 1199.000

116.550 1136.000 1073.000

116.600 1137.000 1200.000

116.650 1137.000 1074.000

116.700 1138.000 1201.000

116.750 1138.000 1075.000

116.800 1139.000 1202.000

116.850 1139.000 1076.000

116.900 1140.000 1203.000

116.950 1140.000 1077.000

117.000 1141.000 1204.000

117.050 1141.000 1078.000

117.100 1142.000 1205.000

117.150 1142.000 1079.000

117.200 1143.000 1206.000

117.250 1143.000 1080.000

117.300 1144.000 1207.000

117.350 1144.000 1081.000

117.400 1145.000 1208.000

117.450 1145.000 1082.000

117.500 1146.000 1209.000

117.550 1146.000 1083.000

117.600 1147.000 1210.000

117.650 1147.000 1084.000

117.700 1148.000 1211.000

117.750 1148.000 1085.000

117.800 1149.000 1212.000

117.850 1149.000 1086.000

117.900 1150.000 1213.000

117.950 1150.000 1087.000

(7) 978.0 MHz is authorized for Universal Access Transceiver service.

(8) 1300-1350 MHz: The use of this band is restricted to surveillance radar stations and associated airborne transponders.

(9) 1559-1626.5 MHz: The use of this band is limited to airborne electronic aids to air navigation and any associated land stations.

(10) 2700-2900 MHz: Non-Government land-based radars may be licensed. U.S. Government coordination is required. Applicants must demonstrate a need for the service which the Government is not prepared to render.

(11) 5000-5250 MHz: This band is to be used for the operation of the international standard system (microwave landing system).

(12) 9000-9200 MHz: This band is available to land-based radars. Stations operating in this band may receive interference from stations operating in the radiolocation service.

(13) 15,400-15,700 MHz: This band is available for use of land stations associated with airborne electronic aids to air navigation.

(14) 24,250-25,250, 32,300-33,400 MHz: In these bands, land-based radionavigation aids are permitted where they operate with airborne radionavigation devices.

(c) Frequencies available for radionavigation land test stations. (1) The frequencies set forth in §§ 87.187(c), (e) through (j), (r), (t), and (ff); and 87.475(b)(6) through (b)(11) may be assigned to radionavigation land test stations for the testing of aircraft transmitting equipment that normally operate on these frequencies and for the testing of land-based receiving equipment that operate with airborne radionavigation equipment.

(2) The frequencies available for assignment to radionavigation land test stations for the testing of airborne receiving equipment are 108.000 and 108.050 MHz for VHF omni-range; 108.100 and 108.150 MHz for localizer; 334.550 and 334.700 MHz for glide slope; 978 and 979 MHz (X channel)/1104 MHz (Y channel) for DME; 978 MHz for Universal Access Transceiver; 1030 MHz for air traffic control radar beacon transponders; 1090 MHz for Traffic Alert and Collision Avoidance Systems (TCAS); and 5031.0 MHz for microwave landing systems. Additionally, the frequencies in paragraph (b) of this section may be assigned to radionavigation land test stations after coordination with the FAA. The following conditions apply:after coordination with the FAA. The following conditions apply:

(i) The maximum power authorized on the frequencies 108.150 and 334.550 MHz is 1 milliwatt. The maximum power authorized on all other frequencies is one watt.

(ii) The pulse repetition rate (PRR) of the 1030 MHz ATC radar beacon test set will be 235 pulses per second (pps) ±5pps.

(iii) The assignment of 108.000 MHz is subject to the condition that no interference will be caused to the reception of FM broadcasting stations and stations using the frequency are not protected against interference from FM broadcasting stations.

(d) Frequencies available for ELT test stations. The frequencies available for assignment to ELT test stations are 121.600, 121.650, 121.700, 121.750, 121.800, 121.850, and 121.900 MHz. Licensees must:

(1) Not cause harmful interference to voice communications on these frequencies or any harmonically related frequency.

(2) Coordinate with the appropriate FAA Regional Spectrum Management Office prior to each activation of the transmitter.

(e) Frequencies available for differential GPS stations. Frequencies in the 112-118 MHz band may be assigned to Special Category I (SCAT-I) ground stations for differential GPS data links.

(1) The frequencies available are on 25 kHz centers with the lowest assignable frequency being centered at 112.000 MHz and the highest assignable frequency being centered at 117.950 MHz.

(2) Applicants must coordinate a frequency, time slot assignment, and three-letter identifier with the FAA and provide this information to the Commission upon application.

Collected 2026-08-27T02:26:28Z. Source file · JSON

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