Allocations

 
U.S. Non-Federal-Government Allocations
25.25 - 25.5 GHz
Inter-satellite 5.536
Standard frequency and time signal-satellite (Earth-to-space)

FCC Rule Parts:
RF Devices (15)

U.S. Federal Government Allocations
25.25 - 25.5 GHz
FIXED
INTER-SATELLITE 5.536
MOBILE
Standard frequency and time signal-satellite (Earth-to-space)


ITU Region 1 Allocations
25.25 - 25.5 GHz
FIXED
INTER-SATELLITE 5.536
MOBILE
Standard frequency and time signal-satellite (Earth-to-space)


ITU Region 2 Allocations
25.25 - 25.5 GHz
FIXED
INTER-SATELLITE 5.536
MOBILE
Standard frequency and time signal-satellite (Earth-to-space)


ITU Region 3 Allocations
25.25 - 25.5 GHz
FIXED
INTER-SATELLITE 5.536
MOBILE
Standard frequency and time signal-satellite (Earth-to-space)


SpectrumWiki


Footnotes


5.536 Use of the 25.25-27.5 GHz band by the inter-satellite service is limited to space research and Earth exploration-satellite applications, and also transmissions of data originating from industrial and medical activities in space.

SpectrumWiki

 
24 GHz Market Area Service
NASA Deep Space Network (DSN)
NASA Tracking and Data Relay Satellite System (TDRSS)
Unlicensed Level Probing Radars
Airport Body Scanners
Possible MSS Allocations (WRC-15 Agenda Item 1.10)


Related Documents, Links, and Multimedia:
FCC Proceeding (4)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 25.25 GHz 25.375 GHz 25.5 GHz
Wavelength 1.2 cm 1.2 cm 1.2 cm
Band designator(s) SHF; K-band (IEEE) SHF; K-band (IEEE) SHF; K-band (IEEE)
Isotropic collecting area 0.1 cm2 0.1 cm2 0.1 cm2
Free space loss (1 m) 60.5 dB 60.5 dB 60.6 dB
Free space loss (1 km) 120.5 dB 120.5 dB 120.6 dB
Free space loss (10 km) 140.5 dB 140.5 dB 140.6 dB
Free space loss (100 km) 160.5 dB 160.5 dB 160.6 dB
Free space loss (1000 km) 180.5 dB 180.5 dB 180.6 dB
Free space loss
(35,786 km = GEO orbit)
211.6 dB 211.6 dB 211.7 dB
Free space loss (378,370 km = Moon) 232.1 dB 232.1 dB 232.1 dB