Allocations

 
U.S. Non-Federal-Government Allocations
22.55 - 23.55 GHz
FIXED
INTER-SATELLITE US145 US278
MOBILE


U.S. Federal Government Allocations
22.55 - 23.55 GHz
FIXED
INTER-SATELLITE US145 US278
MOBILE


ITU Region 1 Allocations
22.55 - 23.15 GHz
FIXED
INTER-SATELLITE 5.338A
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


ITU Region 2 Allocations
22.55 - 23.15 GHz
FIXED
INTER-SATELLITE 5.338A
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


ITU Region 3 Allocations
22.55 - 23.15 GHz
FIXED
INTER-SATELLITE 5.338A
MOBILE
SPACE RESEARCH (Earth-to-space) 5.532A


SpectrumWiki


Footnotes


5.149 In making assignments to stations of other services to which the bands:

13360-13410 kHz,22.81-22.86 GHz,
25550-25670 kHz,23.07-23.12 GHz,
37.5-38.25 MHz,31.2-31.3 GHz,
73-74.6 MHz31.5-31.8 GHz
  in Regions 1 and 3,  in Regions 1 and 3,
150.05-153 MHz36.43-36.5 GHz,
  in Region 1,42.5-43.5 GHz,
322-328.6 MHz,48.94-49.04 GHz,
406.1-410 MHz,76-86 GHz,
608-614 MHz in92-94 GHz,
  Regions 1 and 3,94.1-100 GHz,
1330-1400 MHz,102-109.5 GHz,
1610.6-1613.8 MHz,111.8-114.25 GHz,
1660-1670 MHz,128.33-128.59 GHz,
1718.8-1722.2 MHz,129.23-129.49 GHz,
2655-2690 MHz,130-134 GHz,
3260-3267 MHz,136-148.5 GHz,
3332-3339 MHz,151.5-158.5 GHz,
3345.8-3352.5 MHz,168.59-168.93 GHz,
4825-4835 MHz,171.11-171.45 GHz,
4950-4990 MHz,172.31-172.65 GHz,
4990-5000 MHz,173.52-173.85 GHz,
6650-6675.2 MHz,195.75-196.15 GHz,
10.6-10.68 GHz,209-226 GHz,
14.47-14.5 GHz,241-250 GHz,
22.01-22.21 GHz,252-275 GHz
22.21-22.5 GHz,

are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see Nos. 4.5 and 4.6 and Article 29). (WRC-07)

5.338A In the bands 1350-1400 MHz, 1427-1452 MHz, 22.55-23.55 GHz, 30-31.3 GHz, 49.7-50.2 GHz, 50.4-50.9 GHz, 51.4-52.6 GHz, 81-86 GHz and 92-94 GHz, Resolution 750 (Rev.WRC-12) applies. (WRC-12)

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.

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.

US342 In making assignments to stations of other services to which the bands:

13360-13410 kHz

42.77-42.87 GHz*

25550-25670 kHz

43.07-43.17 GHz*

37.5-38.25 MHz

43.37-43.47 GHz*

322-328.6 MHz*

48.94-49.04 GHz*

1330-1400 MHz*

76-86 GHz

1610.6-1613.8 MHz*

92-94 GHz

1660-1660.5 MHz*

94.1-100 GHz

1668.4-1670 MHz*

102-109.5 GHz

3260-3267 MHz*

111.8-114.25 GHz

3332-3339 MHz*

128.33-128.59 GHz*

3345.8-3352.5 MHz*

129.23-129.49 GHz*

4825-4835 MHz*

130-134 GHz

4950-4990 MHz

136-148.5 GHz

6650-6675.2 MHz*

151.5-158.5 GHz

14.47-14.5 GHz*

168.59-168.93 GHz*

22.01-22.21 GHz*

171.11-171.45 GHz*

22.21-22.5 GHz

172.31-172.65 GHz*

22.81-22.86 GHz*

173.52-173.85 GHz*

23.07-23.12 GHz*

195.75-196.15 GHz*

31.2-31.3 GHz

209-226 GHz

36.43-36.5 GHz*

241-250 GHz

42.5-43.5 GHz

252-275 GHz

are allocated (*indicates radio astronomy use for spectral line observations), all practicable steps shall be taken to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see ITU Radio Regulations at Nos. 4.5 and 4.6 and Article 29).


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)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 22.55 GHz 23.05 GHz 23.55 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 59.7 dB 59.7 dB
Free space loss (1 km) 119.5 dB 119.7 dB 119.7 dB
Free space loss (10 km) 139.5 dB 139.7 dB 139.7 dB
Free space loss (100 km) 159.5 dB 159.7 dB 159.7 dB
Free space loss (1000 km) 179.5 dB 179.7 dB 179.7 dB
Free space loss
(35,786 km = GEO orbit)
210.6 dB 210.8 dB 210.8 dB
Free space loss (378,370 km = Moon) 231.1 dB 231.3 dB 231.3 dB