Allocations

 
U.S. Non-Federal-Government Allocations
146 - 148 MHz
AMATEUR

FCC Rule Parts:
Amateur Radio (97)

U.S. Federal Government Allocations
144 - 148 MHz


ITU Region 1 Allocations
146 - 148 MHz
FIXED
MOBILE except aeronautical mobile (R)


ITU Region 2 Allocations
146 - 148 MHz
AMATEUR


ITU Region 3 Allocations
146 - 148 MHz
AMATEUR
FIXED
MOBILE


SpectrumWiki



Footnotes

5.217   Alternative allocation: in Afghanistan, Bangladesh, Cuba, Guyana and India, the band 146-148 MHz is allocated to the fixed and mobile services on a primary basis.


SpectrumWiki

 
Amateur Radio 2 m Band
Orbcomm LEO Satellite Constellation




Related Documents, Links, and Multimedia:
Occupancy Measurements (10)
Band Plan (2)
Other (1)




Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 144 MHz 146 MHz 148 MHz
Wavelength 2.1 m 2.1 m 2.0 m
Band designator(s) VHF VHF VHF
Isotropic collecting area 3,449.1 cm2 3,355.3 cm2 3,265.2 cm2
Free space loss (1 m) 15.7 dB 15.7 dB 15.9 dB
Free space loss (1 km) 75.7 dB 75.7 dB 75.9 dB
Free space loss (10 km) 95.7 dB 95.7 dB 95.9 dB
Free space loss (100 km) 115.7 dB 115.7 dB 115.9 dB
Free space loss (1000 km) 135.7 dB 135.7 dB 135.9 dB
Free space loss
(35,786 km = GEO orbit)
166.8 dB 166.8 dB 166.9 dB
Free space loss (378,370 km = Moon) 187.3 dB 187.3 dB 187.4 dB
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