47 CFR 90.263 - Substitution of frequencies below 25 MHz.

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§ 90.263 Substitution of frequencies below 25 MHz.
Frequencies below 25 MHz when shown in the radio pool frequency listings under this part will be assigned to base or mobile stations only upon a satisfactory showing that, from a safety of life standpoint, frequencies above 25 MHz will not meet the operational requirements of the applicant. These frequencies are available for assignment in many areas; however, in individual cases such assignment may be impracticable due to conflicting frequency use authorized to stations in other services by this and other countries. In such cases, a substitute frequency, if found available, may be assigned from the following bands: 1705-1750 kHz, 2107-2170 kHz, 2194-2495 kHz, 2506-2850 kHz, 3155-3400 kHz, or 4438-4650 kHz. Since such assignments are in certain instances subject to additional technical and operation limitations, it is necessary that each application also include precise information concerning transmitter output power, type and directional characteristics, if any, of the antenna, and the minimum necessary hours of operation. (This section is not applicable to the Radiolocation Service, subpart F of this part.)
[72 FR 35196, June 27, 2007]

Title 47 published on 2013-10-01

The following are only the Rules published in the Federal Register after the published date of Title 47.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-04-11; vol. 79 # 70 - Friday, April 11, 2014
    1. 79 FR 20105 - Service Rules Governing Public Safety Narrowband Operations in the 769-775/799-805 MHz Bands
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      Final rule.
      Effective April 11, 2014.
      47 CFR Part 90

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United States Code
Statutes at Large

Title 47 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR 90 after this date.

  • 2014-04-11; vol. 79 # 70 - Friday, April 11, 2014
    1. 79 FR 20105 - Service Rules Governing Public Safety Narrowband Operations in the 769-775/799-805 MHz Bands
      GPO FDSys XML | Text
      FEDERAL COMMUNICATIONS COMMISSION
      Final rule.
      Effective April 11, 2014.
      47 CFR Part 90