Goto Section: 73.57 | 73.61 | Table of Contents
FCC 73.58
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 73.58 Indicating instruments.
(a) Each AM broadcast station must be equipped with indicating
instruments which conform with the specifications described in
§ 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 § 73.51(a)(1) or § 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 § 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: 2010 |
2012
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