Goto Section: 78.17 | 78.19 | Table of Contents
FCC 78.18
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 78.18 Frequency assignments.
(a) The Cable Television Relay Service is assigned the band of frequencies
from 12.70 to 13.20 GHz. This band is shared with the Fixed-Satellite
Service (earth-to-space) from 12.70 to 12.75 GHz and Television Auxiliary
Broadcast Stations from 12.70 to 13.20 GHz. The following channels may be
assigned to CARS stations for the propagation of radio waves with the
indicated polarization:
(1) For CARS stations using FM transmission:
Group A Channels
Designation Channel boundaries (GHz)
A01^1 12.700-12.725
A02^1 12.725-12.750
A03^1 12.750-12.775
A04^1 12.775-12.800
A05^1 12.800-12.825
A06^1 12.825-12.850
A07^1 12.850-12.875
A08^1 12.875-12.900
A09^1 12.900-12.925
A10^1 12.925-12.950
A11^1 12.950-12.975
A12^1 12.975-13.000
A13^1 13.000-13.025
A14^1 13.025-13.050
A15^1 13.050-13.075
A16^1 13.075-13.100
A17^1 13.100-13.125
A18^1 13.125-13.150
A19^1 ^213.150-13.175
A20^1 ^213.170-13.200
^1Appropriate polarization designation:
H = Horizontally polarized propagated radio wave.
V = Vertically polarized propagated radio wave.
R = Right-handed (clockwise) elliptically polarized propagated radio wave.
L = Left-handed (counter-clockwise) elliptically polarized propagated radio
wave.
^2See paragraph (l) of this section.
Note: Polarization designations shall be in accordance with IEEE standard
100-1972 as amended.
Group B Channels
Designation Channel boundaries (GHz)
B01^1 12.7125-12.7375
B02^1 12.7375-12.7625
B03^1 12.7625-12.7875
B04^1 12.7875-12.8125
B05^1 12.8125-12.8375
B06^1 12.8375-12.8625
B07^1 12.8625-12.8875
B08^1 12.8875-12.9125
B09^1 12.9125-12.9375
B10^1 12.9375-12.9625
B11^1 12.9625-12.9875
B12^1 12.9875-13.0125
B13^1 13.0125-13.0375
B14^1 13.0375-13.0625
B15^1 13.0625-13.0875
B16^1 13.0875-13.1125
B17^1 13.1125-13.1375
B18^1 ^213.1375-13.1625
B19^1 ^213.1625-13.1875
^1See footnote 1 following GROUP A CHANNELS.
^2See paragraph (l) of this section.
Note: Polarization designations shall be in accordance with IEEE standard
100-1972 as amended.
(2) CARS stations using vestigal sideband AM transmission and FM
transmission requiring a necessary bandwidth of no more than 6 MHz.
Group C Channels
Designation Channel
boundaries (GHz)
[C channels] Alternate
change boundaries (GHz)
[Ca channels]
C01^1 12.7005-12.7065 12.7005-12.7065
C02^1 12.7065-12.7125 12.7065-12.7125
C03^1 12.7125-12.7185 12.7125-12.7185
C04^1 12.7185-12.7225^2 12.7185-12.7245
C05^1 12.7225-12.7285 12.7245-12.7305
C06^1 12.7285-12.7345 12.7305-12.7365
C07^1 12.7345-12.7405 12.7365-12.7425
C08^1 12.7405-12.7465 12.7425-12.7485
C09^1 12.7465-12.7525 12.7485-12.7545
C10^1 12.7525-12.7545^2
C11^1 12.7545-12.7605 12.7545-12.7605
C12^1 12.7605-12.7665 12.7605-12.7665
C13^1 12.7665-12.7725 12.7665-12.7725
C14^1 12.7725-12.7785 12.7725-12.7785
C15^1 12.7785-12.7845 12.7785-12.7845
C16^1 12.7845-12.7905 12.7845-12.7905
C17^1 12.7905-12.7965 12.7905-12.7965
C18^1 12.7965-12.8025 12.7965-12.8025
C19^1 12.8025-12.8085 12.8025-12.8085
C20^1 12.8085-12.8145 12.8085-12.8145
C21^1 12.8145-12.8205 12.8145-12.8205
C22^1 12.8205-12.8265 12.8205-12.8265
C23^1 12.8265-12.8325 12.8265-12.8325
C24^1 12.8325-12.8385 12.8325-12.8385
C25^1 12.8385-12.8445 12.8385-12.8445
C26^1 12.8445-12.8505 12.8445-12.8505
C27^1 12.8505-12.8565 12.8505-12.8565
C28^1 12.8565-12.8625 12.8565-12.8625
C29^1 12.8625-12.8685 12.8625-12.8685
C30^1 12.8685-12.8745 12.8685-12.8745
C31^1 12.8745-12.8805 12.8745-12.8805
C32^1 12.8805-12.8865 12.8805-12.8865
C33^1 12.8865-12.8925 12.8865-12.8925
C34^1 12.8925-12.8985 12.8925-12.8985
C35^1 12.8985-12.9045 12.8985-12.9045
C36^1 12.9045-12.9105 12.9045-12.9105
C37^1 12.9105-12.9165 12.9105-12.9165
C38^1 12.9165-12.9225 12.9165-12.9225
C39^1 12.9225-12.9285 12.9225-12.9285
C40^1 12.9285-12.9345 12.9285-12.9345
C41^1 12.9345-12.9405 12.9345-12.9405
C42^1 12.9405-12.9465 12.9405-12.9465
C43^1 12.9465-12.9525 12.9465-12.9525
^1See footnote 1 following GROUP A CHANNELS.
^2For transmission of pilot subcarriers or other authorized narrow band
signals.
Group D Channels
Designation Channel boundaries (GHz) [D channels] Alternate channel
boundaries (GHz) [Da channels]
D01^1 12.7597-12.7657 12.7597-12.7657
D02^1 12.7657-12.7717 12.7657-12.7717
D03^1 12.7717-12.7777 12.7717-12.7777
D04^1 12.7777-12.7817^2 12.7777-12.7837
D05^1 12.7817-12.7877 12.7837-12.7897
D06^1 12.7877-12.7937 12.7897-12.7957
D07^1 12.7937-12.7997 12.7957-12.8017
D08^1 12.7997-12.8057 12.8017-12.8077
D09^1 12.8057-12.8117 12.8077-12.8137
D10^1 12.8117-12.8137^2 N/A
D11^1 12.8137-12.8197 12.8137-12.8197
D12^1 12.8197-12.8257 12.8197-12.8257
D13^1 12.8257-12.8317 12.8257-12.8317
D14^1 12.8317-12.8377 12.8317-12.8377
D15^1 12.8377-12.8437 12.8377-12.8437
D16^1 12.8437-12.8497 12.8437-12.8497
D17^1 12.8497-12.8557 12.8497-12.8557
D18^1 12.8557-12.8617 12.8557-12.8617
D19^1 12.8617-12.8677 12.8617-12.8677
D20^1 12.8677-12.8737 12.8677-12.8737
D21^1 12.8737-12.8797 12.8737-12.8797
D22^1 12.8797-12.8857 12.8797-12.8857
D23^1 12.8857-12.8917 12.8857-12.8917
D24^1 12.8917-12.8977 12.8917-12.8977
D25^1 12.8977-12.9037 12.8977-12.9037
D26^1 12.9037-12.9097 12.9037-12.9097
D27^1 12.9097-12.9157 12.9097-12.9157
D28^1 12.9157-12.9217 12.9157-12.9217
D29^1 12.9217-12.9277 12.9217-12.9277
D30^1 12.9277-12.9337 12.9277-12.9337
D31^1 12.9337-12.9397 12.9337-12.9397
D32^1 12.9397-12.9457 12.9397-12.9457
D33^1 12.9457-12.9517 12.9457-12.9517
D34^1 12.9517-12.9577 12.9517-12.9577
D35^1 12.9577-12.9637 12.9577-12.9637
D36^1 12.9637-12.9697 12.9637-12.9697
D37^1 12.9697-12.9757 12.9697-12.9757
D38^1 12.9757-12.9817 12.9757-12.9817
D39^1 12.9817-12.9877 12.9817-12.9877
D40^1 12.9877-12.9937 12.9877-12.9937
D41^1 12.9937-12.9997 12.9937-12.9997
D42^1 12.9997-13.0057 12.9997-13.0057
D43^1 13.0057-13.0117 13.0057-13.0117
^1See footnote 1 following GROUP A CHANNELS.
^2For transmission of pilot subcarriers or other authorized narrow band
signals.
Group E Channels
Designation Channel boundaries (GHz) [E channels] Alternate channel
boundaries (GHz) [Ea channels]
E01^1 12.9525-12.9585 12.9525-12.9585
E02^1 12.9585-12.9645 12.9585-12.9645
E03^1 12.9645-12.9705 12.9645-12.9705
E04^1 12.9705-12.9745^2 12.9705-12.9765
E05^1 12.9745-12.9805 12.9765-12.9825
E06^1 12.9805-12.9865 12.9825-12.9885
E07^1 12.9865-12.9925 12.9885-12.9945
E08^1 12.9925-12.9985 12.9945-13.0005
E09^1 12.9985-13.0045 13.0005-13.0065
E10^1 13.0045-13.0065^2 N/A
E11^1 13.0065-13.0125 13.0065-13.0125
E12^1 13.0125-13.0185 13.0125-13.0185
E13^1 13.0185-13.0245 13.0185-13.0245
E14^1 13.0245-13.0305 13.0245-13.0305
E15^1 13.0305-13.0365 13.0305-13.0365
E16^1 13.0365-13.0425 13.0365-13.0425
E17^1 13.0425-13.0485 13.0425-13.0485
E18^1 13.0485-13.0545 13.0485-13.0545
E19^1 13.0545-13.0605 13.0545-13.0605
E20^1 13.0605-13.0665 13.0605-13.0665
E21^1 13.0665-13.0725 13.0665-13.0725
E22^1 13.0725-13.0785 13.0725-13.0785
E23^1 13.0785-13.0845 13.0785-13.0845
E24^1 13.0845-13.0905 13.0845-13.0905
E25^1 13.0905-13.0965 13.0905-13.0965
E26^1 13.0965-13.1025 13.0965-13.1025
E27^1 13.1025-13.1085 13.1025-13.1085
E28^1 13.1085-13.1145 13.1085-13.1145
E29^1 13.1145-13.1205 13.1145-13.1205
E30^1 13.1205-13.1265 13.1205-13.1265
E31^1 13.1265-13.1325 13.1265-13.1325
E32^1 13.1325-13.1385 13.1325-13.1385
E33^1 13.1385-13.1445 13.1385-13.1445
E34^1 13.1445-13.1505^3 13.1445-13.1505^3
E35^1 13.1505-13.1565^3 13.1505-13.1565^3
E36^1 13.1565-13.1625^3 13.1565-13.1625^3
E37^1 13.1625-13.1685^3 13.1625-13.1685^3
E38^1 13.1685-13.1745^3 13.1685-13.1745^3
E39^1 13.1745-13.1805^3 13.1745-13.1805^3
E40^1 13.1805-13.1865^3 13.1805-13.1865^3
E41^1 13.1865-13.1925^3 13.1865-13.1925^3
E42^1 13.1925-13.1985^3 13.1925-13.1985^3
^1See footnote 1 following GROUP A CHANNELS.
^2For transmission of pilot subcarriers or other authorized narrow band
signals.
^3See paragraph (l) of this section.
Group F Channels
Designation Channel boundaries (GHz) [F channels] Alternate channel
boundaries (GHz) [Fa channels]
F01^1 13.0125-13.0185 13.0125-13.0185
F02^1 13.0185-13.0245 13.0185-13.0245
F03^1 13.0245-13.0305 13.0245-13.0305
F04^1 13.0305-13.0345^2 13.0305-13.0365
F05^1 13.0345-13.0405 13.0365-13.0425
F06^1 13.0405-13.0465 13.0425-13.0485
F07^1 13.0465-13.0525 13.0485-13.0545
F08^1 13.0525-13.0585 13.0545-13.0605
F09^1 13.0585-13.0645 13.0605-13.0665
F10^1 13.0645-13.0665^2 N/A
F11^1 13.0665-13.0725 13.0665-13.0725
F12^1 13.0725-13.0785 13.0725-13.0785
F13^1 13.0785-13.0845 13.0785-13.0845
F14^1 13.0845-13.0905 13.0845-13.0905
F15^1 13.0905-13.0965 13.0905-13.0965
F16^1 13.0965-13.1025 13.0965-13.1025
F17^1 13.1025-13.1085 13.1025-13.1085
F18^1 13.1085-13.1145 13.1085-13.1145
F19^1 13.1145-13.1205 13.1145-13.1205
F20^1 13.1205-13.1265 13.1205-13.1265
F21^1 13.1265-13.1325 13.1265-13.1325
F22^1 13.1325-13.1385 13.1325-13.1385
F23^1 13.1385-13.1445 13.1385-13.1445
F24^1 13.1445-13.1505^3 13.1445-13.1505^3
F25^1 13.1505-13.1565^3 13.1505-13.1565^3
F26^1 13.1565-13.1625^3 13.1565-13.1625^3
F27^1 13.1625-13.1685^3 13.1625-13.1685^3
F28^1 13.1685-13.1745^3 13.1685-13.1745^3
F29^1 13.1745-13.1805^3 13.1745-13.1805^3
F30^1 13.1805-13.1865^3 13.1805-13.1865^3
F31^1 13.1865-13.1925^3 13.1865-13.1925^3
F32^1 13.1925-13.1985^3 13.1925-13.1985^3
^1See footnote 1 following GROUP A CHANNELS.
^2For transmission of pilot subcarriers or other authorized narrow band
signals.
^3See paragraph (l) of this section.
(3) For CARS stations using AM and FM transmission requiring a necessary
bandwidth of no more than 12.5 MHz.
Group K Channel
Designation Channel boundaries (GHz)
K01^1 12.7000-12.7125
K02^1 12.7125-12.7250
K03^1 12.7250-12.7375
K04^1 12.7375-12.7500
K05^1 12.7500-12.7625
K06^1 12.7625-12.7750
K07^1 12.7750-12.7875
K08^1 12.7875-12.8000
K09^1 12.8000-12.8125
K10^1 12.8125-12.8250
K11^1 12.8250-12.8375
K12^1 12.8375-12.8500
K13^1 12.8500-12.8625
K14^1 12.8625-12.8750
K15^1 12.8750-12.8875
K16^1 12.8875-12.9000
K17^1 12.9000-12.9125
K18^1 12.9125-12.9250
K19^1 12.9250-12.9375
K20^1 12.9375-12.9500
K21^1 12.9500-12.9625
K22^1 12.9625-12.9750
K23^1 12.9750-12.9875
K24^1 12.9875-13.0000
K25^1 13.0000-13.0125
K26^1 13.0125-13.0250
K27^1 13.0250-13.0375
K28^1 13.0375-13.0500
K29^1 13.0500-13.0625
K30^1 13.0625-13.0750
K31^1 13.0750-13.0875
K32^1 13.0875-13.1000
K33^1 13.1000-13.1125
K34^1 13.1125-13.1250
K35^1 13.1250-13.1375
K36^1 13.1375-13.1500
K37^1 2 13.1500-13.1625
K38^1 2 13.1625-13.1750
K39^1 2 13.1750-13.1875
K40^1 2 13.1875-13.2000
^1See footnote 1 following GROUP A CHANNELS.
^2See paragraph (l) of this section.
(4) The Cable Television Relay Service is also assigned the following
frequencies in the 17,700-19,700 MHz band. These frequencies are co-equally
shared with stations in other services under parts 25, 74, and 101 of this
chapter. Cable Television Relay Service stations operating on frequencies in
the sub-bands 18.3-18.58 GHz and 19.26-19.3 GHz that were licensed or had
applications pending before the Commission as of September 18, 1998 may
continue those operations on a shared co-primary basis with other services
under parts 25, 74, and 101 of this chapter. Such stations, however, are
subject to relocation by licensees in the fixed-satellite service. Such
relocation is subject to the provisions of § § 101.85 through 101.97 of this
chapter. No new applications for part 78 licenses will be accepted in the
19.26-19.3 GHz band after June 8, 2000, and no new applications for part 78
licenses will be accepted in the 18.3-18.58 GHz band after November 19,
2002.
(i) 2 MHz maximum authorized bandwidth channel:
Transmit (receive) (MHz) Receive (transmit) (MHz)
18141.0 n/a
(ii) 6 MHz maximum authorized bandwidth channels:
Transmit (receive) (MHz) Receive (transmit) (MHz)
216 MHz Separation
18145.0 n/a
18151.0 18367.0
18157.0 18373.0
18163.0 18379.0
18169.0 18385.0
18175.0 18391.0
18181.0 18397.0
18187.0 18403.0
18193.0 18409.0
18199.0 18415.0
18205.0 18421.0
18211.0 18427.0
18217.0 18433.0
18223.0 18439.0
18229.0 18445.0
18235.0 18451.0
18241.0 18457.0
18247.0 18463.0
18253.0 18469.0
18259.0 18475.0
18265.0 18481.0
18271.0 18487.0
18277.0 18493.0
18283.0 18499.0
18289.0 18505.0
18295.0 18511.0
18301.0 18517.0
18307.0 18523.0
18313.0 18529.0
18319.0 18535.0
18325.0 18541.0
18331.0 18547.0
18337.0 18553.0
18343.0 18559.0
18349.0 18565.0
18355.0 18571.0
18361.0 18577.0
(iii) 10 MHz maximum authorized bandwidth channels:
Transmit (receive) (MHz) Receive (transmit) (MHz)
1560 MHz Separation
17705.0 19265.0
17715.0 19275.0
17725.0 19285.0
17735.0 19295.0
17745.0 19305.0
17755.0 19315.0
17765.0 19325.0
17775.0 19335.0
17785.0 19345.0
17795.0 19355.0
17805.0 19365.0
17815.0 19375.0
17825.0 19385.0
17835.0 19395.0
17845.0 19405.0
17855.0 19415.0
17865.0 19425.0
17875.0 19435.0
17885.0 19445.0
17895.0 19455.0
17905.0 19465.0
17915.0 19475.0
17925.0 19485.0
17935.0 19495.0
17945.0 19505.0
17955.0 19515.0
17965.0 19525.0
17975.0 19535.0
17985.0 19545.0
17995.0 19555.0
18005.0 19565.0
18015.0 19575.0
18025.0 19585.0
18035.0 19595.0
18045.0 19605.0
18055.0 19615.0
18065.0 19625.0
18075.0 19635.0
18085.0 19645.0
18095.0 19655.0
18105.0 19665.0
18115.0 19675.0
18125.0 19685.0
18135.0 19695.0
(iv) 20 MHz maximum authorized bandwidth channels:
Transmit (receive) (MHz) Receive (transmit) (MHz)
1560 MHz Separation
17710.0 19270.0
17730.0 19290.0
17750.0 19310.0
17770.0 19330.0
17790.0 19350.0
17810.0 19370.0
17830.0 19390.0
17850.0 19410.0
17870.0 19430.0
17890.0 19450.0
17910.0 19470.0
17930.0 19490.0
17950.0 19510.0
17970.0 19530.0
17990.0 19550.0
18010.0 19570.0
18030.0 19590.0
18050.0 19610.0
18070.0 19630.0
18090.0 19650.0
18110.0 19670.0
18130.0 19690.0
(v) 40 MHz maximum authorized bandwidth channels:
Transmit (receive) (MHz) Receive (transmit) (MHz)
1560 MHz Separation
17720.0 19280.0
17760.0 19320.0
17800.0 19360.0
17840.0 19400.0
17880.0 19440.0
17920.0 19480.0
17960.0 19520.0
18000.0 19560.0
18040.0 19600.0
18080.0 19640.0
18120.0 19680.0
(vi) 80 MHz maximum authorized bandwidth channels:
Transmit (receive) (MHz) Receive (transmit) (MHz)
1560 MHz Separation
17740.0 19300.0
17820.0 19380.0
17900.0 19460.0
17980.0 19540.0
18060.0 19620.0
(5) 6425 to 6525 MHz—Mobile only. Paired and unpaired operations permitted.
Use of this spectrum for direct delivery of video programs to the general
public or multi-channel cable distribution is not permitted. This band is
co-equally shared with mobile stations licensed pursuant to Parts 74 and 101
of the Commission's Rules. The following channel plans apply.
(i) 1 MHz maximum authorized bandwidth channels.
Transmit (or receive) (MHz) Receive (or transmit) (MHz)
6425.5 6475.5
6450.5 6500.5
(ii) 8 MHz maximum authorized bandwidth channels.
Transmit (or receive) (MHz) Receive (or transmit) (MHz)
6430.0 6480.0
6438.0 6488.0
6446.0 6596.0
6455.0 6505.0
6463.0 6513.0
6471.0 6521.0
(iii) 25 MHz maximum authorized bandwidth channels.
Transmit (or receive) (MHz) Receive (or transmit) (MHz)
6437.5 6487.5
6462.5 6512.5
(6) 1990-2110 MHz—Mobile only. (i) Use of this spectrum for direct delivery
of video programs to the general public or multi-channel cable distribution
is not permitted. This band is co-equally shared with stations licensed
pursuant to parts 74 and 101 of the Commission's Rules. (Common carriers may
use this band pursuant to provisions of § 101.803(b)). The following
channeling plan applies subject to the provisions of § 74.604.
Frequency Band (MHz)
1990-2008
2008-2025
2025-2042
2042-2059
2059-2076
2076-2093
2093-2110
(ii) After a licensee has been relocated in accordance with the provisions
of § 78.40, operations will be in the band 2025-2110 MHz. The following
channel plan will apply, subject to the provisions of § 74.604 of this part:
Frequency Band (MHz)
2025.5-2037.5
2037.5-2049.5
2049.5-2061.5
2061.5-2073.5
2073.5-2085.5
2085.5-2097.5
2097.5-2109.5
(7) 6875-7125 MHz—Mobile only. Use of this spectrum for direct delivery of
video programs to the general public or multi-channel cable distribution is
not permitted. This band is co-equally shared with stations licensed
pursuant to parts 74 and 101 of the Commission's Rules. (Common carriers may
use this band pursuant to provisions of § 101.803(b)). The following
channeling plan applies subject to the provisions of § 74.604.
Frequency Band (MHz)
6875—6900
6900—6925
6925—6950
6950—6975
6975—7000
7000—7025
7025—7050
7050—7075
7075—7100
7100—7125
(b) Television Auxiliary Broadcast Service stations may be assigned channels
in the band 12.70-13.20 GHz subject to the condition that no harmful
interference is caused to fixed CARS stations authorized at the time of such
grants. Translator Relay stations are assigned on a secondary basis. New
CARS stations shall not cause harmful interference to television STL and
intercity relay stations authorized at the time of such grants. Television
pickup stations and CARS pickup stations will be assigned channels in the
band on a co-equal basis subject to the conditions that they accept
interference from and cause no interference to existing or subsequently
authorized television STL, television intercity relay, or fixed CARS
stations. Channels in the 13.150-13.200 GHz band will be assigned
exclusively to television pickup and CARS pickup stations on a co-equal
basis. A cable television system operator will normally be limited in any
one area to the assignment of not more than three channels for CARS pickup
use: Provided, however, That additional channels may be assigned upon a
satisfactory showing that additional channels are necessary and are
available.
(c) An application for a CARS station shall be specific with regard to the
channel or channels requested. Channels shall be identified by the
appropriate designations set forth in paragraph (a) of this section.
(d) For CARS Fixed stations using FM transmission with an authorized
bandwidth per channel of 25 MHz, to conserve spectrum applicants are
encouraged to use alternate A and B channels such that adjacent R.F.
carriers are spaced 12.5 MHz. As example, a fixed station in the CARS,
relaying several channels, would use A01, B01, A02, B02, A03, etc.
(e) For CARS stations using vestigial sideband AM transmissions, channels
from only the Groups C, D, E or F and those frequencies listed in paragraph
(a)(4)(ii) of this section normally will be assigned a station, although
upon adequate showing variations in the use of channels in Groups C, D, E or
F and those frequencies listed in paragraph (a)(4)(ii) of this section may
be authorized on a case-by-case basis in order to avoid potential
interference or to permit a more efficient use. In situations where the
number or the arrangement of channels available in these groups is not
adequate, or in order to avoid potential interference, or in order to
achieve the required VHF channelization arrangement on the cable television
system or for repeated operations, or for two way transmission, or upon the
showing of other good cause, the use of channels in the Groups C, D, E or F
and those frequencies listed in paragraph (a)(4)(ii) of this section may be
authorized. Applicants are encouraged to apply for adjacent channels within
each group of channels, except that different channel arrangements may be
authorized when required to conform to the required channelization
arrangement at VHF on the cable television system, when it is necessary to
transmit non-adjacent off-the-air channels or signals intended to fill
non-adjacent slots in the spectrum, or to avoid potential interference, or
upon other showing of good cause.
(f) For vestigial sideband AM transmission, the assigned visual carrier
frequency for each channel listed in Groups C, D, E or F and those
frequencies listed in paragraph (a)(4)(ii) of this section shall be 1.25 MHz
above the lower channel-edge frequency. The center frequency for the
accompanying FM aural carrier in each channel shall be 4.5 MHz above the
corresponding visual carrier frequency.
(g) For CARS stations using double sideband AM transmission or FM
transmission with authorized bandwidth of no more than 12.5 MHz, Group K
channels normally will be assigned to a station, although upon adequate
showing variations in the use of channels in Group K may be authorized on a
case-by-case basis in order to avoid potential interference or to permit a
more efficient use.
(h) For double sideband AM transmission, the assigned carrier frequency for
each channel listed in Group K shall be 6.25 MHz above the lower boundary
frequency for each channel, and the sideband frequencies corresponding to
the carrier frequency of the accompanying FM aural signal shall be 4.5 MHz
above and below the visual carrier frequency.
(i) All stations shall employ no more than a 12.5 MHz authorized bandwidth
per channel except in any one or more of the following circumstances:
(1) The station is a CARS pickup station;
(2) The transmission path is more than 16.1 km (10 miles) in length;
(3) The station was authorized or an application was on file therefor prior
to July 26, 1973.
(4) Other good cause has been shown that use of a bandwidth of 12.5 MHz or
less per channel would be inefficient, impractical, or otherwise contrary to
the public interest.
(j) Should any conflict arise among applications for stations in this band,
priority will be based on the filing date of an application completed in
accordance with the instructions thereon.
(k) Applicants for Group K channels shall apply for adjacent channels and
the requested channels shall overlap the least possible number of Group A
channels, except that different channel arrangements may be authorized upon
an adequate showing that the foregoing arrangement cannot be used or would
be contrary to the public interest, or in order to avoid potential
interference or to permit a more efficient use.
(l) The band 13.15-13.20 GHz is reserved for television pickup and CARS
pickup stations inside a 50 km radius of the 100 television markets
delineated in § 76.51 of this chapter. Outside a 50 km radius of the 100
television markets delineated in § 76.51 of this chapter, television pickup
stations, CARS stations and NGSO FSS gateway earth stations shall operate on
a primary co-equal basis. The band 13.20-13.2125 GHz is reserved for
television pickup stations on a primary basis and CARS pickup stations on a
secondary basis inside a 50 km radius of the 100 television markets
delineated in § 76.51 of this chapter. Outside a 50 km radius of the 100
markets delineated in § 76.51 of this chapter, television pickup stations and
NGSO FSS gateway earth stations shall operate on a co-primary basis, CARS
stations shall operate on a secondary basis. Fixed television auxiliary
stations licensed pursuant to applications accepted for filing before
September 1, 1979, may continue operation on channels in the 13.15-13.25 GHz
band, subject to periodic license renewals. NGSO FSS gateway uplink
transmissions in the 13.15-13.2125 GHz segment shall be limited to a maximum
EIRP of 3.2 dBW towards 0 degrees on the radio horizon. These provisions
shall not apply to GSO FSS operations in the 12.75-13.25 GHz band.
(m) CARS stations may be authorized for use of the band from 13.20 to 13.25
GHz on a secondary basis to Television Broadcast Auxiliary Stations. CARS
stations are also secondary to NGSO FSS gateway earth station uplink
operations. Any CARS application seeking authorization for use of the 13.20
to 13.25 GHz band must demonstrate that the applicant has exhausted all
spectrum available to it in the 12.70 to 13.20 GHz band. Applications for
use of this band must specify whether the channels are 6 MHz, 12.5 MHz, or
25 MHz wide and give the upper and lower boundaries and the polarization for
each channel.
[ 37 FR 3292 , Feb. 12, 1972. Redesignated at 37 FR 15926 , Aug. 8, 1972]
Editorial Note: For Federal Register citations affecting § 78.18, see the
List of CFR Sections Affected, which appears in the Finding Aids section of
the printed volume and at www.fdsys.gov.
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