Allocations

 
U.S. Non-Federal-Government Allocations
8025 - 8400 MHz


U.S. Federal Government Allocations
8215 - 8400 MHz
EARTH EXPLORATION-SATELLITE (space-to-Earth)
FIXED
FIXED-SATELLITE (Earth-to-space)
Mobile-satellite (Earth-to-space)(no airborne transmissions)


ITU Region 1 Allocations
8215 - 8400 MHz
EARTH EXPLORATION-SATELLITE (space-to-Earth)
FIXED
FIXED-SATELLITE (Earth-to-space)
MOBILE 5.463


ITU Region 2 Allocations
8215 - 8400 MHz
EARTH EXPLORATION-SATELLITE (space-to-Earth)
FIXED
FIXED-SATELLITE (Earth-to-space)
MOBILE 5.463


ITU Region 3 Allocations
8215 - 8400 MHz
EARTH EXPLORATION-SATELLITE (space-to-Earth)
FIXED
FIXED-SATELLITE (Earth-to-space)
MOBILE 5.463


SpectrumWiki


Footnotes


5.462A In Regions 1 and 3 (except for Japan), in the band 8025-8400 MHz, the Earth exploration-satellite service using geostationary satellites shall not produce a power flux-density in excess of the following provisional values for angles of arrival (θ), without the consent of the affected administration:

–174 dB(W/m²) in a 4 kHz bandfor 0°≤θ< 5°
–174 + 0.5 (θ – 5) dB(W/m²) in a 4 kHz band for 5°≤θ< 25°
–164 dB(W/m²) in a 4 kHz bandfor 25°≤ θ ≤ 90°

These values are subject to study under Resolution 124 (Rev.WRC-2000). (FCC)

5.463 Aircraft stations are not permitted to transmit in the band 8025-8400 MHz.

US258 In the bands 8025-8400 MHz and 25.5-27 GHz, the Earth exploration-satellite service (space-to-Earth) is allocated on a primary basis for non-Federal use. Authorizations are subject to a case-by-case electromagnetic compatibility analysis.

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

 
Defense Satellite Communication System 3 (DSCS III)
Wideband Global SATCOM (WGS) System
NASA Deep Space Network (DSN)
GeoEye Imaging Satellites
Skybox-1 and Skybox-2 Earth Exploration-Satellite Service satellites
Skybox high-resolution imaging satellites
Possible new FSS and maritime mobile-satellite allocations, 2015 World Radiocommunication Conference (WRC-15) Agenda Item 1.9
Possible allocations for FSS and maritime mobile-satellite service, 2015 World Radiocommunication Conference (WRC-15) Agenda Item 1.9
WRC-27 study for potential IMT use


Related Documents, Links, and Multimedia:

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 8.025 GHz 8.2125 GHz 8.4 GHz
Wavelength 3.7 cm 3.7 cm 3.6 cm
Band designator(s) SHF; X-band (IEEE) SHF; X-band (IEEE) SHF; X-band (IEEE)
Isotropic collecting area 1.1 cm2 1.1 cm2 1.0 cm2
Free space loss (1 m) 50.7 dB 50.7 dB 50.9 dB
Free space loss (1 km) 110.7 dB 110.7 dB 110.9 dB
Free space loss (10 km) 130.7 dB 130.7 dB 130.9 dB
Free space loss (100 km) 150.7 dB 150.7 dB 150.9 dB
Free space loss (1000 km) 170.7 dB 170.7 dB 170.9 dB
Free space loss
(35,786 km = GEO orbit)
201.8 dB 201.8 dB 202.0 dB
Free space loss (378,370 km = Moon) 222.3 dB 222.3 dB 222.5 dB