47 CFR 22.727 - Power limits for conventional rural radiotelephone transmitters.

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§ 22.727 Power limits for conventional rural radiotelephone transmitters.
The transmitting power of transmitters operating on the channels listed in § 22.725 must not exceed the limits in this section.
(a) Maximum ERP. The effective radiated power (ERP) of central office and rural subscriber station transmitters must not exceed the applicable limits in this paragraph under any circumstances.
Frequency range (MHz) Maximum ERP (watts)
152-153 1400
157-159 150
454-455 3500
459-460 150
(b) Basic power limit. Except as provided in paragraph (d) of this section, the ERP of central office station transmitters must not exceed 500 Watts.
(c) Height-power limits. Except as provided in paragraph (d) of this section, the ERP of central office station transmitters must not exceed the amount that would result in an average distance to the “service contour” of 41.6 kilometers (26 miles) for VHF channels or 30.7 kilometers (19 miles) for UHF channels. The average distance to the “service contour” is calculated by taking the arithmetic mean of the distances determined using the procedures specified in § 22.567 for the eight cardinal radial directions, excluding cardinal radial directions for which 90% or more of the distance so calculated is over water.
(d) Encompassed interfering contour areas. Central office station transmitters are exempt from the basic power and height-power limits of this section if the area within their interfering contours is totally encompassed by the interfering contours of operating co-channel central office station transmitters controlled by the same licensee. For the purpose of this paragraph, operating transmitters are authorized transmitters that are providing service to subscribers.
(e) Adjacent channel protection. The ERP of central office station transmitters must not exceed 500 Watts if they transmit on channel 454.025 MHz and are located less than 7 kilometers (4.3 miles) from any Private Radio Services station receiving on adjacent channel 454.000 MHz.
[59 FR 59507, Nov. 17, 1994, as amended at 70 FR 19309, Apr. 13, 2005]

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.

  • 2014-12-05; vol. 79 # 234 - Friday, December 5, 2014
    1. 79 FR 72143 - Cellular Service, Including Changes in Licensing of Unserved Area
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      FEDERAL COMMUNICATIONS COMMISSION
      Final rule.
      Effective January 5, 2015, except for the amendments to 47 CFR 22.165(e), 47 CFR 22.948, and 47 CFR 22.953, which contain information collection requirements that have not yet been approved by the Office of Management and Budget (OMB). The Commission will publish a document in the Federal Register announcing the effective date of those three amendments.
      47 CFR Parts 1 and 22

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United States Code

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 22 after this date.

  • 2014-12-05; vol. 79 # 234 - Friday, December 5, 2014
    1. 79 FR 72143 - Cellular Service, Including Changes in Licensing of Unserved Area
      GPO FDSys XML | Text
      FEDERAL COMMUNICATIONS COMMISSION
      Final rule.
      Effective January 5, 2015, except for the amendments to 47 CFR 22.165(e), 47 CFR 22.948, and 47 CFR 22.953, which contain information collection requirements that have not yet been approved by the Office of Management and Budget (OMB). The Commission will publish a document in the Federal Register announcing the effective date of those three amendments.
      47 CFR Parts 1 and 22