§  90.175   Frequency coordinator requirements.

   Except for applications listed in paragraph (j) of this section, each
   application for a new frequency assignment, for a change in existing
   facilities as listed in § 90.135(a), or for operation at temporary
   locations in accordance with § 90.137 must include a showing of
   frequency coordination as set forth further.

   (a) Frequency coordinators may request, and applicants are required to
   provide, all appropriate technical information, system requirements,
   and justification for requested station parameters when such
   information is necessary to identify and recommend the most appropriate
   frequency. Additionally, applicants bear the burden of proceeding and
   the burden of proof in requesting the Commission to overturn a
   coordinator's recommendation.

   (b) For frequencies between 25 and 470 MHz. (1) A statement is required
   from the applicable frequency coordinator as specified in § § 90.20(c)(2)
   and 90.35(b) recommending the most appropriate frequency. In addition,
   for frequencies to which § 90.35(c)(63) or (66) is applicable, the
   written concurrence of the Commission-certified frequency coordinator
   for frequencies designated for central station alarm operations must be
   obtained. In addition, for frequencies above 150 MHz, if the
   interference contour of a proposed station would overlap the service
   contour of a station on a frequency formerly shared prior to radio
   service consolidation by licensees in the Manufacturers Radio Service,
   the Forest Products Radio Service, the Power Radio Service, the
   Petroleum Radio Service, the Motor Carrier Radio Service, the Railroad
   Radio Service, the Telephone Maintenance Radio Service or the
   Automobile Emergency Radio Service, the written concurrence of the
   coordinator for the industry-specific service, or the written
   concurrence of the licensee itself, must be obtained. Requests for
   concurrence must be responded to within 20 days of receipt of the
   request. The written request for concurrence shall advise the receiving
   party of the maximum 20 day response period. The coordinator's
   recommendation may include comments on technical factors such as power,
   antenna height and gain, terrain and other factors which may serve to
   minimize potential interference. In addition:

   (2) On frequencies designated for coordination or concurrence by a
   specific frequency coordinator as specified in § § 90.20(c)(3) and
   90.35(b), and on frequencies designated for concurrence as specified in
   § 90.35(c)(63) or (66), the applicable frequency coordinator shall
   provide a written supporting statement in instances in which
   coordination or concurrence is denied. The supporting statement shall
   contain sufficient detail to permit discernment of the technical basis
   for the denial of concurrence. Concurrence may be denied only when a
   grant of the underlying application would have a demonstrable,
   material, adverse effect on safety.

   (3) In instances in which a frequency coordinator determines that an
   applicant's requested frequency or the most appropriate frequency is
   one designated for coordination or concurrence by a specific frequency
   coordinator as specified in § 90.20(c)(3) or § 90.35(b), that frequency
   coordinator may forward the application directly to the appropriate
   frequency coordinator. A frequency coordinator may only forward an
   application as specified above if consent is received from the
   applicant.

   (4) For any application for mobile repeater station operations on
   frequencies denoted by both § 90.20(d)(90) and (92), or by both
   § 90.35(c)(93) and (95) the frequency coordinator responsible for the
   application must determine and disclose to the applicant the call signs
   and the service areas of all active co-channel incumbent remote control
   and telemetry stations inside the applicant's proposed area of
   operation by adding a special condition to the application, except when
   the applicant has obtained written concurrence from an affected
   incumbent licensee, or when the applicant and the incumbent licensee
   are the same entity.

   (c) For frequencies above 800 MHz: When frequencies are shared by more
   than one service, concurrence must be obtained from the other
   applicable certified coordinators.

   (d) For frequencies in the 450-470 MHz band: When used for secondary
   fixed operations, frequencies shall be assigned and coordinated
   pursuant to § 90.261.

   (e) For frequencies between 470-512 MHz, 769-775/799-805 MHz,
   806-824/851-869 MHz and 896-901/935-940 MHz: A recommendation of the
   specific frequencies that are available for assignment in accordance
   with the loading standards and mileage separations applicable to the
   specific radio service, frequency pool, or category of user involved is
   required from an applicable frequency coordinator. In addition, a
   frequency coordinator must perform the contour overlap analysis
   detailed in § 90.621(d) when coordinating applications for channels in
   the 809-817 MHz/854-862 MHz band segment once interstitial 12.5 kHz
   bandwidth channels become available for licensing in a National Public
   Safety Planning Advisory Committee region.

   (f) For frequencies in the 929-930 MHz band listed in paragraph (b) of
   § 90.494: A statement is required from the coordinator recommending the
   most appropriate frequency.

   (g) For frequencies between 1427-1432 MHz: A statement is required from
   the coordinator recommending the most appropriate frequency, operating
   power and area of operation in accordance with the requirements of
   § 90.259(b).

   (h) Any recommendation submitted in accordance with paragraphs (a),
   (c), (d), or (e) of this section is advisory in character and is not an
   assurance that the Commission will grant a license for operation on
   that frequency. Therefore, applicants are strongly advised not to
   purchase radio equipment operating on specific frequencies until a
   valid authorization has been obtained from the Commission.

   (i) Applications for facilities near the Canadian border north of line
   A or east of line C in Alaska may require coordination with the
   Canadian government. See § 1.928 of this chapter.

   (j) The following applications need not be accompanied by evidence of
   frequency coordination:

   (1) Applications for frequencies below 25 MHz.

   (2) Applications for a Federal Government frequency.

   (3) Applications for frequencies in the 72-76 MHz band except for
   mobile frequencies subject to § 90.35(c)(77).

   (4) [Reserved]

   (5) Applications in the Industrial/Business Pool requesting a frequency
   designated for itinerant operations.

   (6) Applications in the Radiolocation Service.

   (7) Applications filed exclusively to modify channels in accordance
   with band reconfiguration in the 806-824/851-869 band.

   (8) Applications for SMR frequencies contained in § § 90.617(d) Table 4A,
   90.617(e), 90.617(f) and 90.619(b)(2).

   (9) Applications indicating license assignments such as change in
   ownership, control or corporate structure if there is no change in
   technical parameters.

   (10) Applications for mobile stations operating in the 470-512 MHz
   band, 799-805 MHz band, or above 800 MHz if the frequency pair is
   assigned to a single system on an exclusive basis in the proposed area
   of operation.

   (11) Applications for add-on base stations in multiple licensed systems
   operating in the 470-512 MHz, 769-775 MHz band, or above 800 MHz if the
   frequency pair is assigned to a single system on an exclusive basis.

   (12) Applications for control stations operating below 470 MHz,
   769-775/799-805 MHz, or above 800 MHz and meeting the requirements of
   § 90.119(b).

   (13) Except for applications for the frequencies set forth in
   § 90.719(c) and § 90.720, applications for frequencies in the 220-222 MHz
   band.

   (14) Applications for a state license under § 90.529.

   (15) Applications for narrowband low power channels listed for
   itinerant use in § 90.531(b)(4).

   (16) Applications for DSRCS licenses (as well as registrations for
   Roadside Units) under subpart M of this part in the 5895-5925 MHz band.

   (17) Applications for the deletion of a frequency and/or transmitter
   site location.

   (18) Applications for base, mobile, or control stations in the 763-768
   MHz and 793-798 MHz bands.

   (19) Applications filed exclusively to return channels that had been
   authorized for commercial operation pursuant to § 90.621(e) or (f) to
   non-commercial operation (including removal of the authorization to
   interconnect with the public switched telephone network).

   (20) Applications for a reduction in the currently authorized emission
   bandwidth or a deletion of an existing emission designator.

   (21) Applications for a reduction in antenna height or authorized
   power.

   (22) Applications for frequencies in the 4940-4990 MHz band. See
   § 90.1209 of this chapter for further information.

   [ 67 FR 41858 , June 20, 2002, as amended at  67 FR 63289 , Oct. 11, 2002;
    68 FR 38639 , June 30, 2003;  69 FR 39867 , July 1, 2004;  69 FR 46443 ,
   Aug. 3, 2004;  70 FR 61061 , Oct. 20, 2005;  70 FR 76708 , Dec. 28, 2005;
    72 FR 48859 , Aug. 24, 2007;  75 FR 19284 , Apr. 14, 2010;  77 FR 45506 ,
   Aug. 1, 2012;  78 FR 25175 , Apr. 29, 2013;  81 FR 2110 , Jan. 15, 2016;  83 FR 61095 , Nov. 27, 2018;  84 FR 29085 , June 21, 2019;  86 FR 23296 , May
   3, 2021]