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Engineering data
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
More...
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
The AEHF system consists of four geostationay satellites, and will provide advanced wideband communications capabilities for military applications. One satellite is presently in orbit.
Please refer to the Wikipedia article for detail on the AEHF system.
Paired Frequency Bands
Paired Bands
Use
Service
Table
20.2
-
21.2
GHz
AEHF downlink
Mobile-satellite
F
43.5
-
45.5
GHz
AEHF uplink
Mobile-satellite (Earth-to-space)
F
External Links:
Spectrum Management Issues Related to the AEHF System (IEEE Military Communications Conference 2007)
Advanced Extremely High Frequency (Wikipedia)
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Related Documents, Links, and Multimedia:
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 mm
2
3.5 mm
2
3.2 mm
2
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