Allocations

 
U.S. Non-Federal-Government Allocations
267 - 322 MHz


U.S. Federal Government Allocations
267 - 322 MHz
FIXED
MOBILE


ITU Region 1 Allocations
267 - 272 MHz
FIXED
MOBILE
Space operation (space-to-Earth)


ITU Region 2 Allocations
267 - 272 MHz
FIXED
MOBILE
Space operation (space-to-Earth)


ITU Region 3 Allocations
267 - 272 MHz
FIXED
MOBILE
Space operation (space-to-Earth)


SpectrumWiki


Footnotes


5.254 The bands 235-322 MHz and 335.4-399.9 MHz may be used by the mobile-satellite service, subject to agreement obtained under No. 9.21, on condition that stations in this service do not cause harmful interference to those of other services operating or planned to be operated in accordance with the Table of Frequency Allocations except for the additional allocation made in footnote No. 5.256A.

5.257 The band 267-272 MHz may be used by administrations for space telemetry in their countries on a primary basis, subject to agreement obtained under No. 9.21.

G27 In the bands 225-328.6 MHz, 335.4-399.9 MHz, and 1350-1390 MHz, the fixed and mobile services are limited to the military services.

G100 The bands 235-322 MHz and 335.4-399.9 MHz are also allocated on a primary basis to the mobile-satellite service, limited to military operations.

SpectrumWiki

 
Mobile User Objective System (MUOS)
UHF Follow-On (UFO) Satellite Constellation
Military Mobile-Satellite Communications (NTIA)
Area Common User System (ACUS) (NTIA)
Federal Maritime Mobile Communications (NTIA)
Military Aeronautical/ATC Communications and Telemetry (NTIA)
Military Battle Simulation Systems (NTIA)
Gemini Space Program Voice Communications


Related Documents, Links, and Multimedia:
Occupancy Measurements (10)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 267 MHz 294.5 MHz 322 MHz
Wavelength 1.1 m 1.0 m 93.1 cm
Band designator(s) VHF VHF UHF
Isotropic collecting area 1,003.2 cm2 824.6 cm2 689.8 cm2
Free space loss (1 m) 21.0 dB 21.8 dB 21.1 dB
Free space loss (1 km) 81.0 dB 81.8 dB 81.1 dB
Free space loss (10 km) 101.0 dB 101.8 dB 101.1 dB
Free space loss (100 km) 121.0 dB 121.8 dB 121.1 dB
Free space loss (1000 km) 141.0 dB 141.8 dB 141.1 dB
Free space loss
(35,786 km = GEO orbit)
172.1 dB 172.9 dB 172.2 dB
Free space loss (378,370 km = Moon) 192.5 dB 193.4 dB 192.7 dB