§ 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.
[53 FR 28940, Aug. 1, 1988, as amended at 54 FR 11721, Mar. 22, 1989; 63 FR 68958, Dec. 14, 1998; 64 FR 27476, May 20, 1999; 69 FR 32886, June 14, 2004; 71 FR 70680, Dec. 6, 2006; 78 FR 61207, Oct. 3, 2013]
Editorial Note:
At 80 FR 38911, July 7, 2015, § 87.475 was amended by adding paragraphs (b)(11) and (14), however these paragraphs already existed, and the amendment could not be incorporated.