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)

• 5.334   Additional allocation: in Canada and the United States, the band 1 350-1 370 MHz is also allocated to the aeronautical radionavigation service on a primary basis. (WRC-03)

• 5.338   In Kyrgyzstan, Slovakia and Turkmenistan, existing installations of the radionavigation service may continue to operate in the band 1 350-1 400 MHz. (WRC 12)

• 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)

• 5.339   The bands 1 370-1 400 MHz, 2 640-2 655 MHz, 4 950-4 990 MHz and 15.20-15.35 GHz are also allocated to the space research (passive) and Earth exploration-satellite (passive) services on a secondary basis.

• 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)

• 5.341   In the bands 1 400-1 727 MHz, 101-120 GHz and 197-220 GHz, passive research is being conducted by some countries in a programme for the search for intentional emissions of extraterrestrial origin.

• 5.341A   In Region 1, the frequency bands 1 427-1 452 MHz and 1 492-1 518 MHz are identified for use by administrations wishing to implement International Mobile Telecommunications (IMT) in accordance with Resolution 223 (Rev.WRC 15)*. This identification does not preclude the use of these frequency bands by any other application of the services to which it is allocated and does not establish priority in the Radio Regulations. The use of IMT stations is subject to agreement obtained under No. 9.21 with respect to the aeronautical mobile service used for aeronautical telemetry in accordance with No. 5.342. (WRC 15)

• 5.341B   In Region 2, the frequency band 1 427-1 518 MHz is identified for use by administrations wishing to implement International Mobile Telecommunications (IMT) in accordance with Resolution 223 (Rev.WRC 15)*. This identification does not preclude the use of this frequency band by any application of the services to which they are allocated and does not establish priority in the Radio Regulations. (WRC 15)

• 5.341C   The frequency bands 1 427-1 452 MHz and 1 492-1 518 MHz are identified for use by administrations in Region 3 wishing to implement International Mobile Telecommunications (IMT) in accordance with Resolution 223 (Rev.WRC-15)*. The use of these frequency bands by the above administrations for the implementation of IMT in the frequency bands 1 429-1 452 MHz and 1 492 1 518 MHz is subject to agreement obtained under No. 9.21 from countries using stations of the aeronautical mobile service. This identification does not preclude the use of these frequency bands by any application of the services to which it is allocated and does not establish priority in the Radio Regulations. (WRC 15)

• 5.342   Additional allocation: in Armenia, Azerbaijan, Belarus, the Russian Federation, Uzbekistan, Kyrgyzstan and Ukraine, the frequency band 1 429-1 535 MHz is also allocated to the aeronautical mobile service on a primary basis, exclusively for the purposes of aeronautical telemetry within the national territory. As of 1 April 2007, the use of the frequency band 1 452-1 492 MHz is subject to agreement between the administrations concerned. (WRC 15)

• 5.343   In Region 2, the use of the band 1 435-1 535 MHz by the aeronautical mobile service for telemetry has priority over other uses by the mobile service.

• G2   In the bands 216.965-216.995 MHz, 420-450 MHz (except as provided for in G129), 890-902 MHz, 928-942 MHz, 1300-1390 MHz, 2310-2390 MHz, 2417-2450 MHz, 2700-2900 MHz, 3300-3500 MHz, 5650-5925 MHz, and 9000-9200 MHz, use of the Federal radiolocation service is restricted to the military services.

• G27   In the bands 225-328.6 MHz, 335.4-399.9 MHz, and 1350-1390 MHz, the fixed and mobile services are limited to the military services.

• G114   The band 1369.05-1390 MHz is also allocated to the fixed-satellite service (space-to-Earth) and to the mobile-satellite service (space-to-Earth) on a primary basis for the relay of nuclear burst data.

• NG338A  In the bands 1390-1395 MHz and 1427-1435 MHz, licensees are encouraged to take all reasonable steps to ensure that unwanted emissions power does not exceed the following levels in the band 1400-1427 MHz:

    (a) For stations of point-to-point systems in the fixed service: −45 dBW/27 MHz.

    (b) For stations in the mobile service (except for devices authorized by the FCC for the Wireless Medical Telemetry Service): −60 dBW/27 MHz.

• US74   In the bands 25.55-25.67, 73-74.6, 406.1-410, 608-614, 1400-1427, 1660.5-1670, 2690-2700, and 4990-5000 MHz, and in the bands 10.68-10.7, 15.35-15.4, 23.6-24.0, 31.3-31.5, 86-92, 100-102, 109.5-111.8, 114.25-116, 148.5-151.5, 164-167, 200-209, and 250-252 GHz, the radio astronomy service shall be protected from unwanted emissions only to the extent that such radiation exceeds the level which would be present if the offending station were operating in compliance with the technical standards or criteria applicable to the service in which it operates. Radio astronomy observations in these bands are performed at the locations listed in US385.

• US79   In the bands 1390-1400 MHz and 1427-1432 MHz, the following provisions shall apply:

      (a) Airborne and space-to-Earth operations are prohibited.

      (b) Federal operations (except for devices authorized by the FCC for the Wireless Medical Telemetry Service) are on a non-interference basis to non-Federal operations and shall not constrain implementation of non-Federal operations.

• US246   No station shall be authorized to transmit in the following bands: 73-74.6 MHz, 608-614 MHz, except for medical telemetry equipment¹ and white space devices,² 1400-1427 MHz, 1660.5-1668.4 MHz, 2690-2700 MHz, 4990-5000 MHz, 10.68-10.7 GHz, 15.35-15.4 GHz, 23.6-24 GHz, 31.3-31.8 GHz, 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.

  ¹Medical telemetry equipment shall not cause harmful interference to radio astronomy operations in the band 608-614 MHz and shall be coordinated under the requirements found in 47 CFR 95.1119.

  ²White space devices shall not cause harmful interference to radio astronomy operations in the band 608-614 MHz and shall not operate within the areas described in 47 CFR 15.712(h).

• US279   The frequency 2182 kHz may be authorized to fixed stations associated with the maritime mobile service for the sole purpose of transmitting distress calls and distress traffic, and urgency and safety signals and messages.

• 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).

• US350   In the band 1427-1432 MHz, Federal use of the land mobile service and non-Federal use of the fixed and land mobile services is limited to telemetry and telecommand operations as described further:

      (a) Medical operations. The use of the band 1427-1432 MHz for medical telemetry and telecommand operations (medical operations) shall be authorized for both Federal and non-Federal stations.

          (1) Medical operations shall be authorized in the band 1427-1429.5 MHz in the United States and its insular areas, except in the following locations: Austin/Georgetown, Texas; Detroit and Battle Creek, Michigan; Pittsburgh, Pennsylvania; Richmond/Norfolk, Virginia; Spokane, Washington; and Washington DC metropolitan area (collectively, the “carved-out” locations). See Section 47 C.F.R. 90.259(b)(4) for a detailed description of these areas.

          (2) In the carved-out locations, medical operations shall be authorized in the band 1429-1431.5 MHz.

          (3) Medical operations may operate on frequencies in the band 1427-1432 MHz other than those described in paragraphs (a)(1) and (2) only if the operations were registered with a designated frequency coordinator prior to April 14, 2010.

      (b) Non-medical operations. The use of the band 1427-1432 MHz for non-medical telemetry and telecommand operations (non-medical operations) shall be limited to non-Federal stations.

          (1) Non-medical operations shall be authorized on a secondary basis to the Wireless Medical Telemetry Service (WMTS) in the band 1427-1429.5 MHz and on a primary basis in the band 1429.5-1432 MHz in the United States and its insular areas, except in the carved-out locations.

          (2) In the carved-out locations, non-medical operations shall be authorized on a secondary basis in the band 1429-1431.5 MHz and on a primary basis in the bands 1427-1429 MHz and 1431.5-1432 MHz.

• US385   Radio astronomy observations may be made in the bands 1350-1400 MHz, 1718.8-1722.2 MHz, and 4950-4990 MHz on an unprotected basis, and in the band 2655-2690 MHz on a secondary basis, at the following radio astronomy observatories:

  Allen Telescope Array, Hat Creek, CA	Rectangle between latitudes 40° 00' N and 42° 00' N and between longitudes 120° 15' W and 122° 15' W.
  NASA Goldstone Deep Space Communications Complex, Goldstone, CA	80 kilometers (50 mile) radius centered on 35° 20' N, 116° 53' W.
  National Astronomy and Ionosphere Center, Arecibo, PR	Rectangle between latitudes 17° 30' N and 19° 00' N and between longitudes 65° 10' W and 68° 00' W.
  National Radio Astronomy Observatory, Socorro, NM	Rectangle between latitudes 32° 30' N and 35° 30' N and between longitudes 106° 00' W and 109° 00' W.
  National Radio Astronomy Observatory, Green Bank, WV	Rectangle between latitudes 37° 30' N and 39° 15' N and between longitudes 78° 30' W and 80° 30' W.
  National Radio Astronomy Observatory, Very Long Baseline Array Stations	80 kilometer radius centered on lat/lon (N/W):
  Brewster, WA	48° 08', 119° 41'
  Fort Davis, TX	30° 38', 103° 57'
  Hancock, NH	42° 56', 71° 59'
  Kitt Peak, AZ	31° 57', 111° 37'
  Los Alamos, NM	35° 47', 106° 15'
  Mauna Kea, HI	19° 48', 155° 27'
  North Liberty, IA	41° 46', 91° 34'
  Owens Valley, CA	37° 14', 118° 17'
  Pie Town, NM	34° 18', 108° 07'
  Saint Croix, VI	17° 45', 64° 35'
  Owens Valley Radio Observatory, Big Pine, CA	Two contiguous rectangles, one between latitudes 36° 00' N and 37° 00' N and between longitudes 117° 40' W and 118° 30' W and the second between latitudes 37° 00' N and 38° 00' N and between longitudes 118° 00' W and 118° 50' W.

      (a) In the bands 1350-1400 MHz and 4950-4990 MHz, every practicable effort will be made to avoid the assignment of frequencies to stations in the fixed and mobile services that could interfere with radio astronomy observations within the geographic areas given above. In addition, every practicable effort will be made to avoid assignment of frequencies in these bands to stations in the aeronautical mobile service which operate outside of those geographic areas, but which may cause harmful interference to the listed observatories. Should such assignments result in harmful interference to these observatories, the situation will be remedied to the extent practicable.

      (b) In the band 2655-2690 MHz, for radio astronomy observations performed at the locations listed above, licensees are urged to coordinate their systems through the National Science Foundation, Division of Astronomical Sciences, Electromagnetic Spectrum Management Unit, 2415 Eisenhower Avenue, Alexandria, VA 22314; Email: esm@nsf.gov.

  Wiki entries

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  Aeronautical Long Range Surveillance Radars

  Current Use 1240–1370 MHz Aeronautical long range surveillance radars

  Long range surveillance radars are used for air traffic control purposes. Long range radars are able to detect objects as small as 1-2 m^2 cross section out to distances as far as 200-250 nautical miles.
  
  In the United States, there are approximately 130 long range surveillance radars spread across the country as part of the Joint Surveillance System (JSS), shared among FAA, DoD, and the Department of Homeland Security.
  
  Long range surveillance radars can also be used for weather detection, by switching from vertical polarization (for aircraft detection) to circular polarization mode. They can also be used as terminal radars (for monitoring traffic closer-in to airports), under conditions of greater-than-normal separation between aircraft.
  
  The scan time (rotation rate) for long range radars is 12 seconds, which provides position updates for aircraft five times each minute.

  ▸

  Aeronautical Terminal Radars

  Current Use 1240–1370 MHz Aeronautical terminal radars

  Terminal radars are installed at busy airports to monitor air traffic in the vicinity of the airport. Terminal radars have shorter range than long range surveillance radars, but rotate more quickly (4.8 seconds instead of 12).
  
  In the United States, terminal radars are installed at approximately 300 airports.
  
  

  ▸

  Global Positioning System (GPS)

  Current Use 1.379913 GHz GPS Link 4 (L4) 1.38105 GHz GPS Link 3 (L3)

  The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment. The U.S. Air Force develops, maintains, and operates the space and control segments.
  
  GPS satellites provide service to civilian and military users. The civilian service is freely available to all users on a continuous, worldwide basis. The military service is available to U.S. and allied armed forces as well as approved Government agencies.
  
  The specified minimum signal strength on the ground for GPS is:
  
  
  
  
  
  
  
  
  
  

  L1 P(Y):	-161.5 dBW
  L1 C/A:	-158.5 dBW
  L2 P(Y):	-161.5 dBW
  L2 C:	-158.5 dBW
  L5 (I5 & Q5):	-157.0 dBW

  
  
  The first of 32 next-generation GPS satellites (GPS III) is scheduled to be launced in 2014. The new system isn't expected to have widespread availability before approximately 2020.