§ 73.258   Indicating instruments.

   (a) Each FM broadcast station shall be equipped with indicating instruments
   which conform with the specifications described in § 73.1215 for determining
   power by the indirect method; for indicating the relative amplitude of the
   transmission line radio frequency current, voltage, or power; and with such
   other instruments as are necessary for the proper adjustment, operation, and
   maintenance of the transmitting system.

   (b) The function of each instrument shall be clearly and permanently shown
   in the instrument itself or on the panel immediately adjacent thereto.

   (c)  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 FCC: Provided that, if the defective
   instrument is the transmission line meter of a station which determines the
   output power by the direct method, the operating power shall be determined
   by the indirect method in accordance with § 73.267(c) during the entire time
   the station is operated without the transmission line meter.

   (d) If conditions beyond the control of the licensee prevent the restoration
   of the meter to service within the above allowed period, an informal letter
   request in accordance with § 73.3549 may be filed with the FCC, Attention:
   Audio Division, Media Bureau, in Washington, DC for such additional time as
   may be required to complete repairs of the defective instrument.

   [ 41 FR 36818 , Sept. 1, 1976, as amended at  48 FR 44805 , Sept. 30, 1983;  50 FR 32416 , Aug. 12, 1985;  63 FR 33876 , June 22, 1998;  67 FR 13231 , Mar. 21,
   2002]

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