§ 90.103   Radiolocation Service.

   (a) Eligibility. The following persons are eligible for authorizations in
   the  Radiolocation  Service to operate stations to determine distance,
   direction,  speed,  or position by means of radiolocation devices, for
   purposes other than navigation:

   (1) Any person engaged in a commercial, industrial, scientific, educational,
   or local government activity

   (2) A corporation or association that will furnish radiolocation service to
   other persons.

   (3) A corporation that will furnish a nonprofit radio communication service
   to its parent corporation, to another subsidiary of the same parent, or to
   its own subsidiary where the party to be served is regularly engaged in any
   of the eligibility activities set forth in this paragraph.

   (b)  Frequencies  available. The following table indicates frequencies
   available for assignment to stations in the Radiolocation Service, together
   with the class of station(s) to which they are normally assigned, and the
   specific assignment limitations, which are explained in paragraph (c) of
   this section:

   Radiolocation Service Frequency Table
   Frequency or band     Class of station(s)      Limitation
                          Kilohertz
   70 to 90          Radiolocation land or mobile          1
   90 to 110         Radiolocation land                    2
   110 to 130        Radiolocation land or mobile          1
   1705 to 1715      ......do                        4, 5, 6
   1715 to 1750      ......do                           5, 6
   1750 to 1800      do                                 5, 6
   3230 to 3400      ......do                           6, 8
                          Megahertz
   420 to 450        ......do                             21
   2450 to 2500      ......do                      9, 22, 23
   2900 to 3100      ......do                         10, 11
   3100 to 3300      ......do                             12
   3300 to 3500      ......do                         12, 13
   3500 to 3550      ......do                             12
   3550 to 3650      ......do                             30
   5250 to 5350      ......do                             12
   5350 to 5460      ......do                         10, 14
   5460 to 5470      ......do                         10, 15
   5470 to 5600      ......do                         10, 11
   5600 to 5650      ......do                         10, 16
   8500 to 9000      ......do                         12, 17
   9000 to 9200      ......do                         10, 14
   9200 to 9300      ......do                             12
   9300 to 9500      ......do                     10, 15, 18
   9500 to 10,000    ......do                             12
   10,000 to 10,500  ......do                     12, 13, 19
   10,500 to 10,550  ......do                     20, 22, 24
   13,400 to 13,750  ......do                             12
   13,750 to 14,000  ......do                             29
   15,700 to 17,300  ......do                           
   24,050 to 24,250  ......do                     12, 22, 24
   33,400 to 36,000  ......do                             12
   78,000-81,000     .....do                              30

   (c) Explanation of assignment limitations appearing in the frequency table
   of paragraph (b) of this section:

   (1)  This frequency band is shared with and stations operating in this
   frequency band in this service are on a secondary basis to stations licensed
   in the Maritime Mobile Service.

   (2)  This frequency band is shared with and stations operating in this
   frequency  band  in this service are on a secondary basis to the LORAN
   Navigation System; all operations are limited to radiolocation land stations
   in accordance with footnote US104, § 2.106 of this chapter.

   (3) [Reserved]

   (4) The non-Federal Government radiolocation service in this band is on a
   secondary basis to stations in the aeronautical radionavigation service
   operating on 1708 kHz.

   (5) Station assignments on frequencies in this band will be made subject to
   the conditions that the maximum output power shall not exceed 375 watts and
   the maximum authorized bandwidth shall not exceed 2 kHz.

   (6) Because of the operation of stations having priority on the same or
   adjacent frequencies in this or in other countries, frequency assignments in
   this band may either be unavailable or may be subject to certain technical
   or  operational  limitations.  Therefore,  applications  for frequency
   assignments  in  this  band  shall  include information concerning the
   transmitter output power, the type and directional characteristics of the
   antenna and the minimum hours of operation (GMT).

   (7) [Reserved]

   (8) Frequencies in this band may only be assigned to radiolocation stations
   which are also assigned frequencies in the 1605-1800 kHz band, provided the
   use of frequencies in this band is necessary for the proper functioning of
   the  particular radiolocation system. Operations in this band are on a
   secondary basis to stations operating in accordance with the Commission's
   table of frequency allocations contained in § 2.106 of this chapter.

   (9) This band is allocated to the Radiolocation Service on a secondary basis
   to other fixed or mobile services and must accept any harmful interference
   that  may  be  experienced  from such services or from the industrial,
   scientific, and medical (ISM) equipment operating in accordance with part 18
   of this chapter. In the 2483.5-2500 MHz band, no applications for new or
   modification to existing stations to increase the number of transmitters
   will be accepted. Existing licensees as of July 25, 1985, or on a subsequent
   date following as a result of submitting an application for license on or
   before July 25, 1985, are grandfathered and their operation is co-primary
   with the Radiodetermination Satellite Service.

   (10) Speed measuring devices will not be authorized in this band.

   (11) This frequency band is shared with and is on a secondary basis to the
   Maritime  Radionavigation  Stations  (part  80)  and to the Government
   Radiolocation Service.

   (12)  This frequency is shared with and is on a secondary basis to the
   Government Radiolocation Service.

   (13)  Operations  in  this band are limited to survey operations using
   transmitters with a peak power not to exceed 5 watts into the antenna.

   (14) This frequency band is shared with and is on a secondary basis to the
   Aeronautical  Radionavigation  Service (part 87) and to the Government
   Radiolocation Service.

   (15) The non-Government Radiolocation Service in this band is secondary to
   the  Maritime  Radionavigation  Stations  (part  80), the Aeronautical
   Radionavigation Service (part 87) and the Government Radiolocation Service.

   (16) This frequency band is shared with and is on a secondary basis to the
   Maritime   Radionavigation  Stations  (part  80)  and  the  Government
   Meteorological Aids Service.

   (17) Operation in this frequency band is on a secondary basis to airborne
   Doppler radars at 8800 MHz.

   (18) Radiolocation installations will be coordinated with the Government
   Meteorological Aids Service, and insofar as practicable, will be adjusted to
   meet the needs of that service.

   (19) Operations in this band are on a secondary basis to the Amateur Radio
   Service (part 97). Pulsed emissions are prohibited.

   (20)  This  band is restricted to radiolocation systems using type N0N
   emission with a power not to exceed 40 watts into the antenna.

   (21) Non-Government radiolocation stations in the band are secondary to the
   Government  Radiolocation  Service,  the Amateur Radio Service and the
   Amateur-Satellite Service. Pulse-ranging radiolocation stations in this band
   may be authorized along the shorelines of Alaska and the contiguous 48
   states. Radiolocation stations using spread spectrum techniques may be
   authorized in the band 420-435 MHz for operation within the contiguous 48
   states and Alaska. Also, stations using spread spectrum techniques shall be
   limited to a maximum output power of 50 watts, shall be subject to the
   applicable technical standards in § 90.209 until such time as more definitive
   standards are adopted by the Commission and shall identify in accordance
   with § 90.425(c)(2). Authorizations will be granted on a case-by-case basis;
   however, operations proposed to be located within the zones set forth in
   footnote US269, § 2.106 of this chapter should not expect to be accommodated.

   (22) For frequencies 2455 MHz, 10,525 MHz, and 24,125 MHz, only unmodulated,
   continuous wave (NON) emission shall be employed. The frequency 24.10 GHz,
   and frequencies in the 24.20-24.25 GHz band may use NON emission along with
   an ancillary FM digital emission. The frequency 24.10 GHz will be used for
   the purpose of alerting motorists of hazardous driving conditions and the
   presence of emergency vehicles. Equipment operating on 24.10 GHz must keep
   the deviation of the FM digital signal within ±5 MHz. Equipment operating on
   this frequency must have a frequency stability of at least 2000 ppm and is
   exempt from the requirements of § § 90.403(c), 90.403(f), and 90.429 of this
   part.

   (23) Devices designed to operate as field disturbance sensors on frequencies
   between 2450 and 2500 MHz with a field strength equal to or less than 50,000
   microvolts per meter at 30 meters, on a fundamental frequency, will not be
   licensed or certificated for use under this part. Such equipment must comply
   with the requirements for field disturbance sensors as set forth in part 15
   of this chapter.

   (24) Devices designed to operate as field disturbance sensors on frequencies
   between 10,500 and 10,550 MHz and between 24,050 and 24,250 MHz, with field
   strength equal to or less than 250,000 microvolts per meter at 30 meters, on
   the fundamental frequency, will not be licensed or certificated for use
   under this part. Such equipment must comply with the requirements for field
   disturbance sensors as set forth in part 15 of this chapter.

   (25)-(28) [Reserved

   (29) This frequency band is shared with and is on secondary basis to the
   Fixed-Satellite  Service  and to the Government's Radiolocation, Space
   Research and Earth Exploration-Satellite Services. After January 1, 2000,
   the Government's Space Research and Earth Exploration-Satellite Services
   shall  operate  on  a co-equal secondary basis with the non-Government
   Radiolocation Service, except that grandfathered space stations in the
   Tracking and Data Relay Satellite System shall continue to be protected from
   harmful interference.

   (30) This frequency band is shared with and is on a secondary basis to the
   Government Radiolocation Service, the Fixed Satellite Service (part 25), and
   the  Citizens  Broadband  Radio Service (part 96). No new licenses for
   Non-Federal Radiolocation Services in this band will be issued after July
   23, 2015.

   (d) Other additional frequencies available. Radiolocation stations in this
   service  may  be  authorized, on request, to use frequencies allocated
   exclusively to Federal Government stations, in those instances where the
   Commission finds, after consultation with the appropriate Government agency
   or agencies, that such assignment is necessary or required for coordination
   with Government activities.

   [ 43 FR 54791 , Nov. 22, 1978]

   Editorial Note: For Federal Register citations affecting § 90.103, see the
   List of CFR Sections Affected, which appears in the Finding Aids section of
   the printed volume and at www.fdsys.gov.

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Subpart G—Applications and Authorizations

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