Radio spectrum allocations

Footnotes

• 5.149   In making assignments to stations of other services to which the bands:
  13 360-13 410 kHz,
  25 550-25 670 kHz,
  37.5-38.25 MHz,
  73-74.6 MHz in Regions 1 and 3,
  150.05-153 MHz in Region 1,
  322-328.6 MHz,
  406.1-410 MHz,
  608-614 MHz in Regions 1 and 3,
  1 330-1 400 MHz,
  1 610.6-1 613.8 MHz,
  1 660-1 670 MHz,
  1 718.8-1 722.2 MHz,
  2 655-2 690 MHz,
  3 260-3 267 MHz,
  3 332-3 339 MHz,
  3 345.8-3 352.5 MHz,
  4 825-4 835 MHz, 4 950-4 990 MHz,
  4 990-5 000 MHz,
  6 650-6 675.2 MHz,
  10.6-10.68 GHz,
  14.47-14.5 GHz,
  22.01-22.21 GHz,
  22.21-22.5 GHz,
  22.81-22.86 GHz,
  23.07-23.12 GHz,
  31.2-31.3 GHz,
  31.5-31.8 GHz in Regions 1 and 3,
  36.43-36.5 GHz,
  42.5-43.5 GHz,
  48.94-49.04 GHz,
  76-86 GHz,
  92-94 GHz,
  94.1-100 GHz, 102-109.5 GHz,
  111.8-114.25 GHz,
  128.33-128.59 GHz,
  129.23-129.49 GHz,
  130-134 GHz,
  136-148.5 GHz,
  151.5-158.5 GHz,
  168.59-168.93 GHz,
  171.11-171.45 GHz,
  172.31-172.65 GHz,
  173.52-173.85 GHz,
  195.75-196.15 GHz,
  209-226 GHz,
  241-250 GHz,
  252-275 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 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)

• 5.340   All emissions are prohibited in the following bands:
  1 400-1 427 MHz,
  2 690-2 700 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. (WRC 03)

• 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 frequency bands by other fixed-satellite service applications or by other services to which these frequency bands are allocated on a co-primary basis and does not establish priority in these Radio Regulations among users of the frequency bands. Administrations should take this into account when considering regulatory provisions in relation to these frequency bands. See Resolution 143 (Rev.WRC 19). (WRC-19)

• 5.550C   The use of the frequency bands 37.5-39.5 GHz (space-to-Earth), 39.5-42.5 GHz (space to Earth), 47.2-50.2 GHz (Earth-to-space) and 50.4-51.4 GHz (Earth-to-space) by a non-geostationary satellite system in the fixed-satellite service is subject to the application of the provisions of No. 9.12 for coordination with other non-geostationary-satellite systems in the fixed-satellite service but not with non-geostationary-satellite systems in other services. Resolution 770 (WRC 19) shall also apply, and No. 22.2 shall continue to apply. (WRC 19)

• 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. (WRC-03)

• 5.555   Additional allocation: the band 48.94-49.04 GHz is also allocated to the radio astronomy service on a primary basis. (WRC 2000)

• 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. (WRC-03)

• US156   In the bands 49.7-50.2 GHz and 50.4-50.9 GHz, for earth stations in the fixed-satellite service (Earth-to-space), the unwanted emissions power in the band 50.2-50.4 GHz shall not exceed −20 dBW/ 200 MHz (measured at the input of the antenna), except that the maximum unwanted emissions power may be increased to −10 dBW/200 MHz for earth stations having an antenna gain greater than or equal to 57 dBi. These limits apply under clear-sky conditions. During fading conditions, the limits may be exceeded by earth stations when using uplink power control.

• 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:

  13 360-13 410 kHz	42.77-42.87 GHz*
  25 550-25 670 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).