Allocations

 
U.S. Non-Federal-Government Allocations
56.9 - 57 GHz
EARTH EXPLORATION-SATELLITE (passive)
FIXED
MOBILE 5.558
SPACE RESEARCH (passive)


U.S. Federal Government Allocations
56.9 - 57 GHz
EARTH EXPLORATION-SATELLITE (passive)
FIXED
INTER-SATELLITE G128
MOBILE 5.558
SPACE RESEARCH (passive)


ITU Region 1 Allocations
56.9 - 57 GHz
EARTH EXPLORATION-SATELLITE (passive)
FIXED
INTER-SATELLITE 5.558A
MOBILE 5.558
SPACE RESEARCH (passive)


ITU Region 2 Allocations
56.9 - 57 GHz
EARTH EXPLORATION-SATELLITE (passive)
FIXED
INTER-SATELLITE 5.558A
MOBILE 5.558
SPACE RESEARCH (passive)


ITU Region 3 Allocations
56.9 - 57 GHz
EARTH EXPLORATION-SATELLITE (passive)
FIXED
INTER-SATELLITE 5.558A
MOBILE 5.558
SPACE RESEARCH (passive)


SpectrumWiki

Band Uses (56.9 - 57 GHz)

Footnotes


5.547   The bands 31.8-33.4 GHz, 37-40 GHz, 40.5-43.5 GHz, 51.4-52.6 GHz, 55.78-59 GHz and 64-66 GHz are available for high-density applications in the fixed service (see Resolution 75 (WRC-2000)*). Administrations should take this into account when considering regulatory provisions in relation to these bands. Because of the potential deployment of high-density applications in the fixed-satellite service in the bands 39.5-40 GHz and 40.5-42 GHz (see No. 5.516B), administrations should further take into account potential constraints to high-density applications in the fixed service, as appropriate. *This resolution was revised by WRC-12. (WRC 07)



5.557   Additional allocation: in Japan, the band 55.78-58.2 GHz is also allocated to the radiolocation service on a primary basis. (WRC-97)



5.558   In the bands 55.78-58.2 GHz, 59-64 GHz, 66-71 GHz, 122.25-123 GHz, 130-134 GHz, 167-174.8 GHz and 191.8-200 GHz, stations in the aeronautical mobile service may be operated subject to not causing harmful interference to the inter-satellite service (see No. 5.43). (WRC 2000)



5.558A   Use of the band 56.9-57 GHz by inter-satellite systems is limited to links between satellites in geostationary-satellite orbit and to transmissions from non-geostationary satellites in high-Earth orbit to those in low-Earth orbit. For links between satellites in the geostationary-satellite orbit, the single entry power flux-density at all altitudes from 0 km to 1 000 km above the Earth’s surface, for all conditions and for all methods of modulation, shall not exceed
–147 dB(W/(m2 · 100 MHz)) for all angles of arrival. (WRC-97)



US532   In the bands 21.2-21.4 GHz, 22.21-22.5 GHz, and 56.26-58.2 GHz, the space research and Earth exploration-satellite services shall not receive protection from the fixed and mobile services operating in accordance with the Table of Frequency Allocations.

G128   Use of the band 56.9-57 GHz by inter-satellite systems is limited to transmissions between satellites in geostationary orbit, to transmissions between satellites in geostationary satellite orbit and those in high-Earth orbit, to transmissions from satellites in geostationary satellite orbit to those in low-Earth orbit, and to transmissions from non-geostationary satellites in high-Earth orbit to those in low-Earth orbit. For links between satellites in the geostationary satellite orbit, the single entry power flux-density at all altitudes from 0 km to 1000 km above the Earth's surface, for all conditions and for all methods of modulation, shall not exceed −147 dB (W/m²/100 MHz) for all angles of arrival.

SpectrumWiki

 
V-band


Related Documents, Links, and Multimedia:
FCC Proceeding (2)
White Paper (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 56.9 GHz 56.95 GHz 57 GHz
Wavelength 5.3 mm 5.3 mm 5.3 mm
Band designator(s) EHF (millimeter wave); V-band (IEEE) EHF (millimeter wave); V-band (IEEE) EHF (millimeter wave); V-band (IEEE)
Isotropic collecting area 2.2 mm2 2.2 mm2 2.2 mm2
Free space loss (1 m) 67.6 dB 67.6 dB 67.6 dB
Free space loss (1 km) 127.6 dB 127.6 dB 127.6 dB
Free space loss (10 km) 147.6 dB 147.6 dB 147.6 dB
Free space loss (100 km) 167.6 dB 167.6 dB 167.6 dB
Free space loss (1000 km) 187.6 dB 187.6 dB 187.6 dB
Free space loss
(35,786 km = GEO orbit)
218.6 dB 218.6 dB 218.6 dB
Free space loss (378,370 km = Moon) 239.1 dB 239.1 dB 239.1 dB
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