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)

• US81   The band 38-38.25 MHz is used by both Federal and non-Federal radio astronomy observatories. No new fixed or mobile assignments are to be made and Federal stations in the band 38-38.25 MHz will be moved to other bands on a case-by-case basis, as required, to protect radio astronomy observations from harmful interference. As an exception, however, low powered military transportable and mobile stations used for tactical and training purposes will continue to use the band. To the extent practicable, the latter operations will be adjusted to relieve such interference as may be caused to radio astronomy observations. In the event of harmful interference from such local operations, radio astronomy observatories may contact local military commands directly, with a view to effecting relief. A list of military commands, areas of coordination, and points of contact for purposes of relieving interference may be obtained upon request from the Office of Engineering and Technology, FCC, Washington, DC 20554.

• 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).