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SpectrumWiki

Radio spectrum allocations

Look up a frequency or a range.

Examples: 88.5 MHz, 1350–1430 MHz, 2.4 GHz

21.999999 MHz (21,999,999 Hz)

U.S. Non-Federal-Government Allocations

21.924 – 22 MHz

AERONAUTICAL MOBILE (R)

FCC rule parts

Aviation (87)

U.S. Federal Government Allocations

21.924 – 22 MHz

AERONAUTICAL MOBILE (R)

ITU Region 1 Allocations

21.924 – 22 MHz

AERONAUTICAL MOBILE (R)

ITU Region 2 Allocations

21.924 – 22 MHz

AERONAUTICAL MOBILE (R)

ITU Region 3 Allocations

21.924 – 22 MHz

AERONAUTICAL MOBILE (R)

Footnotes

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.