Allocations

 
U.S. Non-Federal-Government Allocations
39 - 40 MHz
LAND MOBILE


U.S. Federal Government Allocations
39 - 40 MHz


ITU Region 1 Allocations
39 - 39.5 MHz
FIXED
MOBILE
Radiolocation 5.132


ITU Region 2 Allocations
38.25 - 39.986 MHz
FIXED
MOBILE


ITU Region 3 Allocations
38.25 - 39.5 MHz
FIXED
MOBILE


SpectrumWiki


Footnotes


5.132 The frequencies 4210 kHz, 6314 kHz, 8416.5 kHz, 12579 kHz, 16806.5 kHz, 19680.5 kHz, 22376 kHz and 26100.5 kHz are the international frequencies for the transmission of maritime safety information (MSI) (see Appendix 17).

Could not find 5.159

NG124 In the bands 30.85-34, 37-38, 39-40, 42-47.41, 150.995-156.25, 158.715-159.465, 453.0125-453.9875, 458.0125-458.9875, 460.0125-465.6375, and 467.9375-467.9875 MHz, police licensees are authorized to operate low power transmitters on a secondary basis in accordance with the provisions of 47 CFR 2.803 and 90.20(e)(5).

SpectrumWiki

 
Federal Government fixed/mobile
Ocean Radar (WRC-2012)
Radio Astronomy (38 MHz)
Single Channel Ground and Airborne Radio System (SINCGARS)
Access Broadband over Power Line (Access BPL)
Experimental Ultra-Wideband (UWB) Systems
Sputnik I (aka Alpha-2)


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

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 38.25 MHz 39.125 MHz 40 MHz
Wavelength 7.8 m 7.7 m 7.5 m
Band designator(s) VHF VHF VHF
Isotropic collecting area 4.9 m2 4.7 m2 4.5 m2
Free space loss (1 m) 4.1 dB 4.3 dB 4.4 dB
Free space loss (1 km) 64.1 dB 64.3 dB 64.4 dB
Free space loss (10 km) 84.1 dB 84.3 dB 84.4 dB
Free space loss (100 km) 104.1 dB 104.3 dB 104.4 dB
Free space loss (1000 km) 124.1 dB 124.3 dB 124.4 dB
Free space loss
(35,786 km = GEO orbit)
155.2 dB 155.4 dB 155.5 dB
Free space loss (378,370 km = Moon) 175.7 dB 175.9 dB 175.9 dB