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Radio spectrum allocations

Look up a frequency or a range.

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

40.499999999 GHz (40,499,999,999 Hz)

U.S. Federal Government Allocations

40 – 40.5 GHz

EARTH EXPLORATION-SATELLITE (Earth-to-space)

FIXED-SATELLITE (space-to-Earth)

MOBILE-SATELLITE (space-to-Earth)

SPACE RESEARCH (Earth-to-space)

Earth exploration-satellite (space-to-Earth)

G117

ITU Region 1 Allocations

40 – 40.5 GHz

EARTH EXPLORATION-SATELLITE (Earth-to-space)

FIXED

FIXED-SATELLITE (space-to-Earth) 5.516B 5.550C

MOBILE 5.550B

MOBILE-SATELLITE (space-to-Earth)

SPACE RESEARCH (Earth-to-space)

Earth exploration-satellite (space-to-Earth)

5.550E

ITU Region 2 Allocations

40 – 40.5 GHz

EARTH EXPLORATION-SATELLITE (Earth-to-space)

FIXED

FIXED-SATELLITE (space-to-Earth) 5.516B 5.550C

MOBILE 5.550B

MOBILE-SATELLITE (space-to-Earth)

SPACE RESEARCH (Earth-to-space)

Earth exploration-satellite (space-to-Earth)

5.550E

ITU Region 3 Allocations

40 – 40.5 GHz

EARTH EXPLORATION-SATELLITE (Earth-to-space)

FIXED

FIXED-SATELLITE (space-to-Earth) 5.516B 5.550C

MOBILE 5.550B

MOBILE-SATELLITE (space-to-Earth)

SPACE RESEARCH (Earth-to-space)

Earth exploration-satellite (space-to-Earth)

5.550E

Footnotes

  • 5.516B   The following bands are identified for use by high-density applications in the fixed-satellite service:

    17.3-17.7 GHz (space-to-Earth) in Region 1,
    18.3-19.3 GHz (space-to-Earth) in Region 2,
    19.7-20.2 GHz (space-to-Earth) in all Regions,
    39.5-40 GHz (space-to-Earth) in Region 1,
    40-40.5 GHz (space-to-Earth) in all Regions,
    40.5-42 GHz (space-to-Earth) in Region 2,
    47.5-47.9 GHz (space-to-Earth) in Region 1,
    48.2-48.54 GHz (space-to-Earth) in Region 1,
    49.44-50.2 GHz (space-to-Earth) in Region 1,

    and

    27.5-27.82 GHz (Earth-to-space) in Region 1,
    28.35-28.45 GHz (Earth-to-space) in Region 2,
    28.45-28.94 GHz (Earth-to-space) in all Regions,
    28.94-29.1 GHz (Earth-to-space) in Region 2 and 3,
    29.25-29.46 GHz (Earth-to-space) in Region 2,
    29.46-30 GHz (Earth-to-space) in all Regions,
    48.2-50.2 GHz (Earth-to-space) in Region 2.

    This identification does not preclude the use of these frequency bands by other fixed-satellite service applications or by other services to which these frequency bands are allocated on a co-primary basis and does not establish priority in these Radio Regulations among users of the frequency bands. Administrations should take this into account when considering regulatory provisions in relation to these frequency bands. See Resolution 143 (Rev.WRC 19). (WRC-19)

  • 5.550B   The frequency band 37-43.5 GHz, or portions thereof, is identified for use by administrations wishing to implement the terrestrial component of International Mobile Telecommunications (IMT). This identification does not preclude the use of this frequency band by any application of the services to which it is allocated and does not establish priority in the Radio Regulations. Because of the potential deployment of FSS earth stations within the frequency range 37.5-42.5 GHz and high-density applications in the fixed-satellite service in the frequency bands 39.5-40 GHz in Region 1, 40-40.5 GHz in all Regions and 40.5-42 GHz in Region 2 (see No. 5.516B), administrations should further take into account potential constraints to IMT in these frequency bands, as appropriate. Resolution 243 (WRC 19) applies. (WRC 19)

  • 5.550C   The use of the frequency bands 37.5-39.5 GHz (space-to-Earth), 39.5-42.5 GHz (space to Earth), 47.2-50.2 GHz (Earth-to-space) and 50.4-51.4 GHz (Earth-to-space) by a non-geostationary satellite system in the fixed-satellite service is subject to the application of the provisions of No. 9.12 for coordination with other non-geostationary-satellite systems in the fixed-satellite service but not with non-geostationary-satellite systems in other services. Resolution 770 (WRC 19) shall also apply, and No. 22.2 shall continue to apply. (WRC 19)

  • 5.550E   The use of the frequency bands 39.5-40 GHz and 40-40.5 GHz by non-geostationary-satellite systems in the mobile-satellite service (space-to-Earth) and by non geostationary-satellite systems in the fixed-satellite service (space-to-Earth) is subject to the application of the provisions of No. 9.12 for coordination with other non-geostationary-satellite systems in the fixed-satellite and mobile-satellite services but not with non-geostationary-satellite systems in other services. No. 22.2 shall continue to apply for non geostationary-satellite-systems. (WRC-19)

  • G117   In the bands 7.25-7.75 GHz, 7.9-8.4 GHz, 17.375-17.475 GHz, 17.6-21.2 GHz, 30-31 GHz, 33-36 GHz, 39.5-41 GHz, 43.5-45.5 GHz and 50.4-51.4 GHz, the Federal fixed-satellite and mobile-satellite services are limited to military systems.

Wiki entries

2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.6

Proposed Use 37.5–42.5 GHz WRC-19 Agenda Item 1.6
1.6 to consider the development of a regulatory framework for non-GSO FSS satellite systems that may operate in the frequency bands 37.5-39.5 GHz (space-to-Earth), 39.5-42.5 GHz (space-to-Earth), 47.2-50.2 GHz (Earth-to-space) and 50.4-51.4 GHz (Earth-to-space), in accordance with Resolution 159 [COM6/18] (WRC-15);

WRC-27 agenda item regarding technical/regulatory rules for FSS networks for equitable access

Proposed Use 37.5–42.5 GHz WRC-27 agenda item regarding technical/regulatory rules for FSS networks for equitable access.
WRC agenda item 1.6:

to consider technical and regulatory measures for fixed-satellite service satellite networks/systems in the frequency bands 37.5-42.5 GHz (space-to-Earth), 42.5-43.5 GHz (Earth-to-space), 47.2-50.2 GHz (Earth-to-space) and 50.4-51.4 GHz (Earth-to-space) for equitable access to these frequency bands, in accordance with Resolution 131 (WRC-23)