Allocations

 
U.S. Non-Federal-Government Allocations
5.25 - 5.275 MHz
FIXED
MOBILE except aeronautical mobile
RADIOLOCATION 5.132A


U.S. Federal Government Allocations
5.25 - 5.275 MHz
FIXED
MOBILE except aeronautical mobile
RADIOLOCATION 5.132A


ITU Region 1 Allocations
5.25 - 5.275 MHz
FIXED
MOBILE except aeronautical mobile (R)
Radiolocation 5.132A


ITU Region 2 Allocations
5.25 - 5.275 MHz
FIXED
MOBILE except aeronautical mobile
RADIOLOCATION 5.132A


ITU Region 3 Allocations
5.25 - 5.275 MHz
FIXED
MOBILE except aeronautical mobile
Radiolocation


SpectrumWiki

Band Uses (5250 - 5275 kHz)

Footnotes


5.132A   Stations in the radiolocation service shall not cause harmful interference to, or claim protection from, stations operating in the fixed or mobile services. Applications of the radiolocation service are limited to oceanographic radars operating in accordance with Resolution 612 (Rev.WRC 12). (WRC 12)



5.133A   Alternative allocation: in Armenia, Belarus, Moldova and Kyrgyzstan, the frequency bands 5 250-5 275 kHz and 26 200-26 350 kHz are allocated to the fixed and mobile, except aeronautical mobile, services on a primary basis. (WRC 19)



US340   The band 2-30 MHz is available on a non-interference basis to Federal and non-Federal maritime and aeronautical stations for the purposes of measuring the quality of reception on radio channels. See 47 CFR 87.149 for the list of protected frequencies and bands within this frequency range. Actual communications shall be limited to those frequencies specifically allocated to the maritime mobile and aeronautical mobile services.

SpectrumWiki

 
Ocean Radar (WRC-2012)
Access Broadband over Power Line (Access BPL)
Potential Future Amateur Radio Allocation


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

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 5250 kHz 5262.5 kHz 5275 kHz
Wavelength 57.1 m 57.0 m 56.8 m
Band designator(s) HF HF HF
Isotropic collecting area 259.5 m2 258.3 m2 257.0 m2
Free space loss (1 m) N/A (near field) N/A (near field) N/A (near field)
Free space loss (1 km) 46.9 dB 46.9 dB 46.9 dB
Free space loss (10 km) 66.9 dB 66.9 dB 66.9 dB
Free space loss (100 km) 86.9 dB 86.9 dB 86.9 dB
Free space loss (1000 km) 106.9 dB 106.9 dB 106.9 dB
Free space loss
(35,786 km = GEO orbit)
137.9 dB 137.9 dB 138.0 dB
Free space loss (378,370 km = Moon) 158.4 dB 158.4 dB 158.5 dB
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