Allocations

 
U.S. Non-Federal-Government Allocations
22.5 - 22.55 GHz
FIXED
INTER-SATELLITE US145 US278
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A

FCC Rule Parts:
Fixed Microwave (101)

U.S. Federal Government Allocations
22.5 - 22.55 GHz
FIXED
INTER-SATELLITE US145 US278
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


ITU Region 1 Allocations
22.5 - 22.55 GHz
FIXED
INTER-SATELLITE 5.338A
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


ITU Region 2 Allocations
22.5 - 22.55 GHz
FIXED
INTER-SATELLITE 5.338A
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


ITU Region 3 Allocations
22.5 - 22.55 GHz
FIXED
INTER-SATELLITE 5.338A
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


SpectrumWiki


Footnotes


5.338A   In the frequency bands 1 350-1 400 MHz, 1 427-1 452 MHz, 22.55-23.55 GHz, 24.25-27.5 GHz, 30-31.3 GHz, 49.7 50.2 GHz, 50.4-50.9 GHz, 51.4-52.4 GHz, 52.4-52.6 GHz, 81-86 GHz and 92-94 GHz, Resolution 750 (Rev.WRC 19) applies. (WRC 19)



5.532A   The location of earth stations in the space research service shall maintain a separation distance of at least 54 km from the respective border(s) of neighbouring countries to protect the existing and future deployment of fixed and mobile services unless a shorter distance is otherwise agreed between the corresponding administrations. Nos. 9.17 and 9.18 do not apply. (WRC 12)



US145   The following unwanted emissions power limits for non-geostationary satellites operating in the inter-satellite service that transmit in the band 22.55-23.55 GHz shall apply in any 200 MHz of the passive band 23.6-24 GHz, based on the date that complete advance publication information is received by the ITU’s Radiocommunication Bureau:

    (a) For information received before January 1, 2020: −36 dBW/200 MHz.

    (b) For information received on or after January 1, 2020: −46 dBW/200 MHz.



US211   In the bands 1670-1690, 5000-5250 MHz and 10.7-11.7, 15.1365-15.35, 15.4-15.7, 22.5-22.55, 24-24.05, 31.0-31.3, 31.8-32.0, 40.5-42.5, 116-122.25, 123-130, 158.5-164, 167-168, 191.8-200, and 252-265 GHz, applicants for airborne or space station assignments are urged to take all practicable steps to protect radio astronomy observations in the adjacent bands from harmful interference; however, US74 applies.

US278   In the bands 22.55-23.55 GHz and 32.3-33 GHz, non-geostationary inter-satellite links may operate on a secondary basis to geostationary inter-satellite links.


SpectrumWiki

 
Iridium
Common Carrier Fixed Point-to-Point Microwave
Possible MSS Allocations (WRC-15 Agenda Item 1.10)


Related Documents, Links, and Multimedia:
FCC Proceeding (1)
Legislation (1)
Other (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 22.5 GHz 22.525 GHz 22.55 GHz
Wavelength 1.3 cm 1.3 cm 1.3 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) 59.5 dB 59.5 dB 59.5 dB
Free space loss (1 km) 119.5 dB 119.5 dB 119.5 dB
Free space loss (10 km) 139.5 dB 139.5 dB 139.5 dB
Free space loss (100 km) 159.5 dB 159.5 dB 159.5 dB
Free space loss (1000 km) 179.5 dB 179.5 dB 179.5 dB
Free space loss
(35,786 km = GEO orbit)
210.6 dB 210.6 dB 210.6 dB
Free space loss (378,370 km = Moon) 231.1 dB 231.1 dB 231.1 dB
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