Allocations

 
U.S. Non-Federal-Government Allocations
38 - 39.5 GHz
FIXED
FIXED-SATELLITE (space-to-Earth) NG63
MOBILE NG175

Relevant FCC Auctions:
Auction 30 (39 GHz), $410,649,085
 Total net auction bids: $410,649,085

U.S. Federal Government Allocations
38 - 38.6 GHz
FIXED
MOBILE


ITU Region 1 Allocations
38 - 39.5 GHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE
Earth exploration-satellite (space-to-Earth)


ITU Region 2 Allocations
38 - 39.5 GHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE
Earth exploration-satellite (space-to-Earth)


ITU Region 3 Allocations
38 - 39.5 GHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE
Earth exploration-satellite (space-to-Earth)


SpectrumWiki


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-12)). 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. (FCC)

NG63 In the band 37.5-40 GHz, earth station operations in the fixed-satellite service (space-to-Earth) shall not claim protection from stations in the fixed and mobile services, except where individually licensed earth stations are authorized pursuant to 47 CFR § 25.136.

NG175 In the band 38.6-40 GHz, television pickup stations that were authorized on or before April 16, 2003, may continue to operate on a secondary basis to stations operating in accordance with the Table of Frequency Allocations.

SpectrumWiki

 
2023 World Radiocommunication Conference (WRC-23) Preliminary Agenda Item 2.4
2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.6


Related Documents, Links, and Multimedia:
FCC Proceeding (4)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 38 GHz 38.75 GHz 39.5 GHz
Wavelength 7.9 mm 7.7 mm 7.6 mm
Band designator(s) EHF (millimeter wave); Ka-band (IEEE) EHF (millimeter wave); Ka-band (IEEE) EHF (millimeter wave); Ka-band (IEEE)
Isotropic collecting area 5.0 mm2 4.8 mm2 4.6 mm2
Free space loss (1 m) 64.0 dB 64.2 dB 64.4 dB
Free space loss (1 km) 124.0 dB 124.2 dB 124.4 dB
Free space loss (10 km) 144.0 dB 144.2 dB 144.4 dB
Free space loss (100 km) 164.0 dB 164.2 dB 164.4 dB
Free space loss (1000 km) 184.0 dB 184.2 dB 184.4 dB
Free space loss
(35,786 km = GEO orbit)
215.1 dB 215.3 dB 215.5 dB
Free space loss (378,370 km = Moon) 235.6 dB 235.8 dB 235.9 dB