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Allocations

U.S. Non-Federal-Government Allocations

45.5 - 46.9 GHz
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIONAVIGATION-SATELLITE

5.554

FCC Rule Parts:
RF Devices (15)

U.S. Federal Government Allocations

45.5 - 46.9 GHz
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIONAVIGATION-SATELLITE

5.554

ITU Region 1 Allocations

43.5 - 47 GHz
MOBILE 5.553
MOBILE-SATELLITE
RADIONAVIGATION
RADIONAVIGATION-SATELLITE

5.554

ITU Region 2 Allocations

43.5 - 47 GHz
MOBILE 5.553
MOBILE-SATELLITE
RADIONAVIGATION
RADIONAVIGATION-SATELLITE

5.554

ITU Region 3 Allocations

43.5 - 47 GHz
MOBILE 5.553
MOBILE-SATELLITE
RADIONAVIGATION
RADIONAVIGATION-SATELLITE

5.554

SpectrumWiki

Advanced Extremely High Frequency (AEHF) Military Satellite System

Footnotes

5.553 In the bands 43.5-47 GHz and 66-71 GHz, stations in the land mobile service may be operated subject to not causing harmful interference to the space radiocommunication services to which these bands are allocated (see No. 5.43).

5.554 In the bands 43.5-47 GHz, 66-71 GHz, 95-100 GHz, 123-130 GHz, 191.8-200 GHz and 252-265 GHz, satellite links connecting land stations at specified fixed points are also authorized when used in conjunction with the mobile-satellite service or the radionavigation-satellite service.

SpectrumWiki

Advanced Extremely High Frequency (AEHF) Military Satellite System

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Other (1)

The Karl G. Jansky Very Large Array (VLA) near Socorro, New Mexico, is capable of observing cosmic radio emissions at any frequency within the range of 1-50 GHz, but has regulatory protections only in bands allocated to the radio astronomy service. The VLA is operated by the National Radio Astronomy Observatory, and is funded by the National Science Foundation.

Frequencies/Bands

1400 - 1427 MHz

1610.6 - 1613.8 MHz

1660 - 1670 MHz

2655 - 2700 MHz

4990 - 5000 MHz

10.68 - 10.7 GHz

15.35 - 15.4 GHz

22.21 - 22.5 GHz

23.6 - 24 GHz

31.3 - 31.8 GHz

42.5 - 43.5 GHz

Services

Radio Astronomy

Document type and status: Other (Current)
Document date or date of hyperlink query: January 19, 2012

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Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	43.5 GHz	45.25 GHz	47 GHz
Wavelength	6.9 mm	6.6 mm	6.4 mm
Band designator(s)	EHF (millimeter wave); V-band (IEEE)	EHF (millimeter wave); V-band (IEEE)	EHF (millimeter wave); V-band (IEEE)
Isotropic collecting area	3.8 mm²	3.5 mm²	3.2 mm²
Free space loss (1 m)	65.2 dB	65.6 dB	65.9 dB
Free space loss (1 km)	125.2 dB	125.6 dB	125.9 dB
Free space loss (10 km)	145.2 dB	145.6 dB	145.9 dB
Free space loss (100 km)	165.2 dB	165.6 dB	165.9 dB
Free space loss (1000 km)	185.2 dB	185.6 dB	185.9 dB
Free space loss (35,786 km = GEO orbit)	216.3 dB	216.6 dB	217.0 dB
Free space loss (378,370 km = Moon)	236.8 dB	237.1 dB	237.5 dB