Goto Section: 74.635 | 74.637 | Table of Contents
Revised as of December 4, 2012
Goto Year:2011 |
§ 74.636 Power limitations.
(a) On any authorized frequency, transmitter peak output power and the
average power delivered to an antenna in this service must be the
minimum amount of power necessary to carry out the communications
desired and shall not exceed the values listed in the following table.
Application of this principle includes, but is not to be limited to,
requiring a licensee who replaces one or more of its antennas with
larger antennas to reduce its antenna input power by an amount
appropriate to compensate for the increased primary lobe gain of the
replacement antenna(s). In no event shall the average equivalent
isotropically radiated power (EIRP), as referenced to an isotropic
radiator, exceed the values specified in the following table. In cases
of harmful interference, the Commission may, after notice and
opportunity for hearing, order a change in the effective radiated power
of this station. The table follows:
Frequency band (MHz) Maximum allowable transmitter power Maximum
allowable EIRP ^2
Mobile (W) Fixed (dBW) Mobile (dBW)
2,025 to 2,110 12.0 +45 +35
2,450 to 2,483.5 12.0 +45 +35
6,425 to 6,525 12.0 +35
6,875 to 7,125 12.0 +55 +35
12,700 to 13,250 1.5 +55 +45
17,700 to 18,600 +55
18,600 to 18,800 ^1 +35
18,800 to 19,700 +55
^1 The power delivered to the antenna is limited to −3 dBW.
^2 Stations licensed based on an application filed before April 16,
2003, for EIRP values exceeding those specified above, may continue to
operate indefinitely in accordance with the terms of their current
authorizations, subject to periodic renewal.
(b) The EIRP of transmitters that use Automatic Transmitter Power
Control (ATPC) shall not exceed the EIRP specified on the station
authorization. The EIRP of non-ATPC transmitters shall be maintained as
near as practicable to the EIRP specified on the station authorization.
[ 68 FR 12769 , Mar. 17, 2003]
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Goto Section: 74.635 | 74.637
Goto Year: 2011 |
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