Allocations

 
U.S. Non-Federal-Government Allocations
19.3 - 19.7 GHz
FIXED
FIXED-SATELLITE (space-to-Earth) NG166


U.S. Federal Government Allocations
18.8 - 20.2 GHz
FIXED-SATELLITE (space-to-Earth) US334 G117


ITU Region 1 Allocations
19.3 - 19.7 GHz
FIXED
FIXED-SATELLITE (space-to-Earth)(Earth-to-space) 5.523B 5.523C 5.523D 5.523E
MOBILE


ITU Region 2 Allocations
19.3 - 19.7 GHz
FIXED
FIXED-SATELLITE (space-to-Earth)(Earth-to-space) 5.523B 5.523C 5.523D 5.523E
MOBILE


ITU Region 3 Allocations
19.3 - 19.7 GHz
FIXED
FIXED-SATELLITE (space-to-Earth)(Earth-to-space) 5.523B 5.523C 5.523D 5.523E
MOBILE


SpectrumWiki


Footnotes


5.523B The use of the band 19.3-19.6 GHz (Earth-to-space) by the fixed-satellite service is limited to feeder links for non-geostationary-satellite systems in the mobile-satellite service. Such use is subject to the application of the provisions of No. 9.11A, and No. 22.2 does not apply.

5.523C No. 22.2 shall continue to apply in the bands 19.3-19.6 GHz and 29.1-29.4 GHz, between feeder links of non-geostationary mobile-satellite service networks and those fixed-satellite service networks for which complete Appendix 4 coordination information, or notification information, is considered as having been received by the Bureau prior to 18 November 1995.

5.523D The use of the band 19.3-19.7 GHz (space-to-Earth) by geostationary fixed-satellite service systems and by feeder links for non-geostationary-satellite systems in the mobile-satellite service is subject to the application of the provisions of No. 9.11A, but not subject to the provisions of No. 22.2. The use of this band for other non-geostationary fixed-satellite service systems, or for the cases indicated in Nos. 5.523C and 5.523E, is not subject to the provisions of No. 9.11A and shall continue to be subject to Articles 9 (except No. 9.11A) and 11 procedures, and to the provisions of No. 22.2.

5.523E No. 22.2 shall continue to apply in the bands 19.6-19.7 GHz and 29.4-29.5 GHz, between feeder links of non-geostationary mobile-satellite service networks and those fixed-satellite service networks for which complete Appendix 4 coordination information, or notification information, is considered as having been received by the Bureau by 21 November 1997.

Could not find US139

US334 In the band 17.8-20.2 GHz, Federal space stations in both geostationary (GSO) and non-geostationary satellite orbits (NGSO) and associated earth stations in the fixed-satellite service (space-to-Earth) may be authorized on a primary basis. For a Federal geostationary satellite network to operate on a primary basis, the space station shall be located outside the arc, measured from east to west, 70° West longitude to 120° West longitude. Coordination between Federal fixed-satellite systems and non-Federal space and terrestrial systems operating in accordance with the United States Table of Frequency Allocations is required.

  • (a) In the sub-band 17.8-19.7 GHz, the power flux-density (pfd) at the surface of the Earth produced by emissions from a Federal GSO space station or from a Federal space station in a NGSO constellation of 50 or fewer satellites, for all conditions and for all methods of modulation, shall not exceed the following values in any 1 MHz band:

    • (1) -115 dB(W/m²) for angles of arrival above the horizontal plane (δ) between 0° and 5°,
    • (2) -115 + 0.5(δ - 5) dB(W/m²) for δ between 5° and 25°, and
    • (3) -105 dB(W/m²) for δ between 25° and 90°.

  • (b) In the sub-band 17.8-19.3 GHz, the pfd at the surface of the Earth produced by emissions from a Federal space station in an NGSO constellation of 51 or more satellites, for all conditions and for all methods of modulation, shall not exceed the following values in any 1 MHz band:

    • (1) -115 - X dB(W/m²) for δ between 0° and 5°,
    • (2) -115 - X + ((10 + X)/20)(δ - 5) dB(W/m²) for δ between 5° and 25°, and
    • (3) -105 dB(W/m²) for δ between 25° and 90°; where X is defined as a function of the number of satellites, n, in an NGSO constellation as follows:
      For n ≤ 288, X = (5/119) (n - 50) dB; and
      For n > 288, X = (1/69) (n + 402) dB.


NG166 The use of the band 19.3-19.7 GHz by the fixed-satellite service (space-to-Earth) is limited to feeder links for the mobile-satellite service.

G117 In the bands 7.25-7.75 GHz, 7.9-8.4 GHz, 17.3-17.7 GHz, 17.8-21.2 GHz, 30-31 GHz, 33-36 GHz, 39.5-41 GHz, 43.5-45.5 GHz and 50.4-51.4 GHz, the Federal fixed-satellite and mobile-satellite services are limited to military systems.

SpectrumWiki

 
Iridium
ViaSat-1 Ka-band Satellite
Wideband Global SATCOM (WGS) System
Hughes Network Systems EchoStar XVII (Jupiter-1)
Common Carrier Fixed Point-to-Point Microwave
Mobile User Objective System (MUOS)
Advanced Extremely High Frequency (AEHF) Military Satellite System
Other 3 billion (03b) Networks
2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.5
WRC-19 Agenda Item 1.5


Related Documents, Links, and Multimedia:
Legislation (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 18.8 GHz 19.5 GHz 20.2 GHz
Wavelength 1.6 cm 1.5 cm 1.5 cm
Band designator(s) SHF; K-band (IEEE) SHF; K-band (IEEE) SHF; K-band (IEEE)
Isotropic collecting area 0.2 cm2 0.2 cm2 0.2 cm2
Free space loss (1 m) 58.2 dB 58.3 dB 58.3 dB
Free space loss (1 km) 118.2 dB 118.3 dB 118.3 dB
Free space loss (10 km) 138.2 dB 138.3 dB 138.3 dB
Free space loss (100 km) 158.2 dB 158.3 dB 158.3 dB
Free space loss (1000 km) 178.2 dB 178.3 dB 178.3 dB
Free space loss
(35,786 km = GEO orbit)
209.2 dB 209.3 dB 209.4 dB
Free space loss (378,370 km = Moon) 229.7 dB 229.8 dB 229.9 dB