FCC 22.727 Revised as of October 1, 2007
Goto Year:2006 |
2008
Sec. 22.727 Power limits for conventional rural radiotelephone transmitters.
The transmitting power of transmitters operating on the channels listed in
Sec. 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 Sec. 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]
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