Allocations

 
U.S. Non-Federal-Government Allocations
174.5 - 174.8 GHz
FIXED
INTER-SATELLITE
MOBILE 5.558


U.S. Federal Government Allocations
174.5 - 174.8 GHz
FIXED
INTER-SATELLITE
MOBILE 5.558


ITU Region 1 Allocations
174.5 - 174.8 GHz
FIXED
INTER-SATELLITE
MOBILE 5.558


ITU Region 2 Allocations
174.5 - 174.8 GHz
FIXED
INTER-SATELLITE
MOBILE 5.558


ITU Region 3 Allocations
174.5 - 174.8 GHz
FIXED
INTER-SATELLITE
MOBILE 5.558


SpectrumWiki


Footnotes

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)


SpectrumWiki

None found.


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

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 174.5 GHz 174.65 GHz 174.8 GHz
Wavelength 1.7 mm 1.7 mm 1.7 mm
Band designator(s) EHF (millimeter wave) EHF (millimeter wave) EHF (millimeter wave)
Isotropic collecting area 0.2 mm2 0.2 mm2 0.2 mm2
Free space loss (1 m) 77.3 dB 77.3 dB 77.3 dB
Free space loss (1 km) 137.3 dB 137.3 dB 137.3 dB
Free space loss (10 km) 157.3 dB 157.3 dB 157.3 dB
Free space loss (100 km) 177.3 dB 177.3 dB 177.3 dB
Free space loss (1000 km) 197.3 dB 197.3 dB 197.3 dB
Free space loss
(35,786 km = GEO orbit)
228.4 dB 228.4 dB 228.4 dB
Free space loss (378,370 km = Moon) 248.8 dB 248.9 dB 248.9 dB
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