Goto Section: 90.473 | 90.476 | Table of Contents
FCC 90.475
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 90.475 Operation of internal transmitter control systems in specially
equipped systems.
(a) An internal transmitter control system need not be designed to meet the
requirements of Sec. 90.473 if it meets the following requirements:
(1) All operating positions must be located on premises controlled by the
licensee.
(2) An internal transmitter control system may be used in conjunction with
other approved methods of transmitter control and interconnection so long as
the internal transmitter control system, itself, is neither accessed from
telephone positions in the public switched telephone network (PSTN), nor
uses dial-up circuits in the PSTN. Licensees with complex communications
systems involving fixed systems whose base stations are controlled by such
systems may automatically access these base stations through the microwave
or operational fixed systems from positions in the PSTN, so long as the base
stations and mobile units meet the requirements of Sec. 90.483 and if a separate
circuit is provided for each mode of transmitter operation ( i.e. ,
conventional, dial-up or Internet).
(3) The system must be designed so that upon completion of a transmission,
the base station transmitter(s) will close down automatically within 3
seconds.
(4) To guard against malfunctions, the system must also be designed so that
the base station(s) will be deactivated by an automatic timing device when a
modulated signal is not transmitted for a period of three (3) consecutive
minutes.
(5) The system must include automatic monitoring equipment, installed at the
base station transmitter site(s), which will prevent the activation of the
system when signals of other co-channel stations are present.
(b) [Reserved]
[ 43 FR 54791 , Nov. 22, 1978, as amended at 44 FR 67125 , Nov. 23, 1979; 47 FR 17521 , Apr. 23, 1982; 72 FR 35199 , June 27, 2007]
Interconnected Systems
Goto Section: 90.473 | 90.476
Goto Year: 2007 |
2009
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