Goto Section: 73.57 | 73.61 | Table of Contents
FCC 73.58
Revised as of October 1, 2006
Goto Year:2005 |
2007
Sec. 73.58 Indicating instruments.
(a) Each AM broadcast station must be equipped with indicating instruments
which conform with the specifications described in Sec. 73.1215 for determining
power by the direct and indirect methods, and with such other instruments as
are necessary for the proper adjustment, operation, and maintenance of the
transmitting system. However, auxiliary transmitters with a nominal power
rating of 100 watts or less are not required to be equipped with instruments
to determine power by the indirect method provided that the licensee can
determine the antenna input power at all times.
(b) Since it is usually impractical to measure the actual antenna current of
a shunt excited antenna system, the current measured at the input of the
excitation circuit feed line is accepted as the antenna current.
(c) The function of each instrument shall be clearly and permanently shown
on the instrument itself or on the panel immediately adjacent thereto.
(d) In the event that any one of these indicating instruments becomes
defective when no substitute which conforms with the required specifications
is available, the station may be operated without the defective instrument
pending its repair or replacement for a period not in excess of 60 days
without further authority of the Commission. If the defective instrument is
the antenna current meter of a nondirectional station which does not employ
a remote antenna ammeter, or if the defective instrument is the common point
meter of a station which employs a directional antenna and does not employ a
remote common point meter, the operating power shall be determined by a
method described in Sec. 73.51(a)(1) or Sec. 73.51(d) during the entire time the
station is operated without the antenna current meter or common point meter.
However, if a remote meter is employed and the antenna current ammeter or
common point meter becomes defective, the remote meter can be used to
determine operating power pending the return to service of the regular
meter.
(e) If conditions beyond the control of the licensee prevent the restoration
of the meter to service within the above allowed period, information
requested in accordance with Sec. 73.3549 may be filed by letter with the FCC in
Washington, DC, Attention: Audio Division, Media Bureau, to request
additional time as may be required to complete repairs of the defective
instrument.
[ 41 FR 36817 , Sept. 1, 1976, as amended at 48 FR 38477 , Aug. 24, 1983; 49 FR 49850 , Dec. 24, 1984; 50 FR 32416 , Aug. 12, 1985; 51 FR 2707 , Jan. 21, 1986;
53 FR 2498 , Jan. 28, 1988; 63 FR 33876 , June 22, 1998; 66 FR 20755 , Apr. 25,
2001; 67 FR 13231 , Mar. 21, 2002]
Goto Section: 73.57 | 73.61
Goto Year: 2005 |
2007
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