Allocations

 
U.S. Non-Federal-Government Allocations
26.175 - 26.48 MHz
LAND MOBILE


U.S. Federal Government Allocations
26.175 - 26.48 MHz


ITU Region 1 Allocations
26.2 - 26.35 MHz
FIXED
MOBILE except aeronautical mobile
Radiolocation 5.132A


ITU Region 2 Allocations
26.2 - 26.42 MHz
FIXED
MOBILE except aeronautical mobile
RADIOLOCATION 5.132A


ITU Region 3 Allocations
26.2 - 26.35 MHz
FIXED
MOBILE except aeronautical mobile
Radiolocation 5.132A


SpectrumWiki


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, Austria, Belarus, Moldova, Uzbekistan and Kyrgyzstan, the frequency bands 5250-5275 kHz and 26200-26350 kHz are allocated to the fixed and mobile, except aeronautical mobile, services on a primary basis. (WRC-12)

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)


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

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 26175 kHz 26327.5 kHz 26480 kHz
Wavelength 11.5 m 11.4 m 11.3 m
Band designator(s) HF HF HF
Isotropic collecting area 10.4 m2 10.3 m2 10.2 m2
Free space loss (1 m) 0.8 dB 0.9 dB 0.9 dB
Free space loss (1 km) 60.8 dB 60.9 dB 60.9 dB
Free space loss (10 km) 80.8 dB 80.9 dB 80.9 dB
Free space loss (100 km) 100.8 dB 100.9 dB 100.9 dB
Free space loss (1000 km) 120.8 dB 120.9 dB 120.9 dB
Free space loss
(35,786 km = GEO orbit)
151.9 dB 151.9 dB 151.9 dB
Free space loss (378,370 km = Moon) 172.4 dB 172.4 dB 172.4 dB