SpectrumWiki

Radio spectrum allocations

Look up a frequency or a range.

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

54.25 GHz (54,250,000,000 Hz)

U.S. Federal Government Allocations

54.25 – 55.78 GHz

EARTH EXPLORATION-SATELLITE (passive)

INTER-SATELLITE 5.556A

SPACE RESEARCH (passive)

ITU Region 1 Allocations

54.25 – 55.78 GHz

EARTH EXPLORATION-SATELLITE (passive)

INTER-SATELLITE 5.556A

SPACE RESEARCH (passive)

5.556B

ITU Region 2 Allocations

54.25 – 55.78 GHz

EARTH EXPLORATION-SATELLITE (passive)

INTER-SATELLITE 5.556A

SPACE RESEARCH (passive)

5.556B

ITU Region 3 Allocations

54.25 – 55.78 GHz

EARTH EXPLORATION-SATELLITE (passive)

INTER-SATELLITE 5.556A

SPACE RESEARCH (passive)

5.556B

Footnotes

  • 5.556A   Use of the bands 54.25-56.9 GHz, 57-58.2 GHz and 59-59.3 GHz by the inter-satellite service is limited to satellites in the geostationary-satellite orbit. The single-entry power flux-density at all altitudes from 0 km to 1 000 km above the Earth’s surface produced by a station in the inter-satellite service, for all conditions and for all methods of modulation, shall not exceed –147 dB(W/(m2 · 100 MHz)) for all angles of arrival. (WRC-97)

  • 5.556B   Additional allocation: in Japan, the band 54.25-55.78 GHz is also allocated to the mobile service on a primary basis for low-density use. (WRC-97)