Allocations

 
U.S. Non-Federal-Government Allocations
48.2 - 50.2 GHz
FIXED
FIXED-SATELLITE (Earth-to-space) US156 US297
MOBILE US264


U.S. Federal Government Allocations
48.2 - 50.2 GHz
FIXED
FIXED-SATELLITE (Earth-to-space) US156 US297
MOBILE US264


ITU Region 1 Allocations
48.2 - 48.54 GHz
FIXED
FIXED-SATELLITE (Earth-to-space)(space-to-Earth) 5.552 5.516B 5.554A 5.555B
MOBILE


ITU Region 2 Allocations
48.2 - 50.2 GHz
FIXED
FIXED-SATELLITE (Earth-to-space) 5.338A 5.516B 5.552
MOBILE


ITU Region 3 Allocations
48.2 - 50.2 GHz
FIXED
FIXED-SATELLITE (Earth-to-space) 5.338A 5.516B 5.552
MOBILE


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 and 51.4-52.6 GHz, Resolution 750 (WRC-07) applies. (WRC-07)

5.340 All emissions are prohibited in the following bands:

1400-1427 MHz,
2690-2700 MHz, except those provided for by No. 5.422,
10.68-10.7 GHz, except those provided for by No. 5.483,
15.35-15.4 GHz, except those provided for by No. 5.511,
23.6-24 GHz,
31.3-31.5 GHz,
31.5-31.8 GHz, in Region 2,
48.94-49.04 GHz, from airborne stations,
50.2-50.4 GHz,*
52.6-54.25 GHz,
86-92 GHz,
100-102 GHz,
109.5-111.8 GHz,
114.25-116 GHz,
148.5-151.5 GHz,
164-167 GHz,
182-185 GHz,
190-191.8 GHz,
200-209 GHz,
226-231.5 GHz,
250-252 GHz.

*5.340.1 The allocation to the Earth exploration-satellite service (passive) and the space research service (passive) in the band 50.2-50.4 GHz should not impose undue constraints on the use of the adjacent bands by the primary allocated services in those bands.

5.516B The following bands are identified for use by high-density applications in the fixed-satellite service:

17.3-17.7 GHz(space-to-Earth) in Region 1,
18.3-19.3 GHz(space-to-Earth) in Region 2,
19.7-20.2 GHz(space-to-Earth) in all Regions,
39.5-40 GHz(space-to-Earth) in Region 1,
40-40.5 GHz(space-to-Earth) in all Regions,
40.5-42 GHz(space-to-Earth) in Region 2,
47.5-47.9 GHz(space-to-Earth) in Region 1,
48.2-48.54 GHz(space-to-Earth) in Region 1,
49.44-50.2 GHz(space-to-Earth) in Region 1,
and
27.5-27.82 GHz(Earth-to-space) in Region 1,
28.35-28.45 GHz(Earth-to-space) in Region 2,
28.45-28.94 GHz(Earth-to-space) in all Regions,
28.94-29.1 GHz(Earth-to-space) in Region 2 and 3,
29.25-29.46 GHz(Earth-to-space) in Region 2,
29.46-30 GHz(Earth-to-space) in all Regions,
48.2-50.2 GHz(Earth-to-space) in Region 2.

This identification does not preclude the use of these bands by other fixed-satellite service applications or by other services to which these bands are allocated on a co-primary basis and does not establish priority in these Regulations among users of the bands. Administrations should take this into account when considering regulatory provisions in relation to these bands. See Resolution 143 (WRC-03).

5.552 The allocation of the spectrum for the fixed-satellite service in the bands 42.5-43.5 GHz and 47.2-50.2 GHz for Earth-to-space transmission is greater than that in the band 37.5-39.5 GHz for space-to-Earth transmission in order to accommodate feeder links to broadcasting satellites. Administrations are urged to take all practicable steps to reserve the band 47.2-49.2 GHz for feeder links for the broadcasting-satellite service operating in the band 40.5-42.5 GHz.

5.554A The use of the bands 47.5-47.9 GHz, 48.2-48.54 GHz and 49.44-50.2 GHz by the fixed-satellite service (space-to-Earth) is limited to geostationary satellites.

5.555 Additional allocation: the band 48.94-49.04 GHz is also allocated to the radio astronomy service on a primary basis.

5.555B The power flux-density in the band 48.94-49.04 GHz produced by any geostationary space station in the fixed-satellite service (space-to-Earth) operating in the bands 48.2-48.54 GHz and 49.44-50.2 GHz shall not exceed –151.8 dB(W/m²) in any 500 kHz band at the site of any radio astronomy station.

Could not find US156

US264 In the band 48.94-49.04 GHz, airborne stations shall not be authorized.

US297 The bands 47.2-49.2 GHz and 81-82.5 GHz are also available for feeder links for the broadcasting-satellite service.

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

13360-13410 kHz42.77-42.87 GHz*
25550-25670 kHz43.07-43.17 GHz*
37.5-38.25 MHz43.37-43.47 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 MHz136-148.5 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 GHz172.31-172.65 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 GHz209-226 GHz
36.43-36.5 GHz*241-250 GHz
42.5-43.5 GHz252-275 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

 
High Altitude Platform Station (HAPS)
2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.6


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

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 48.2 GHz 49.2 GHz 50.2 GHz
Wavelength 6.2 mm 6.1 mm 6.0 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 3.1 mm2 3.0 mm2 2.8 mm2
Free space loss (1 m) 66.1 dB 66.3 dB 66.5 dB
Free space loss (1 km) 126.1 dB 126.3 dB 126.5 dB
Free space loss (10 km) 146.1 dB 146.3 dB 146.5 dB
Free space loss (100 km) 166.1 dB 166.3 dB 166.5 dB
Free space loss (1000 km) 186.1 dB 186.3 dB 186.5 dB
Free space loss
(35,786 km = GEO orbit)
217.2 dB 217.4 dB 217.5 dB
Free space loss (378,370 km = Moon) 237.7 dB 237.8 dB 238.0 dB