Goto Section: 90.473 | 90.476 | Table of Contents
FCC 90.475
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 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 § 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 § 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: 2010 |
2012
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