Goto Section: 73.68 | 73.72 | Table of Contents
FCC 73.69
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 73.69 Antenna monitors.
(a) Each station using a directional antenna must have in operation at the
transmitter site an FCC authorized antenna monitor.
(b) In the event that the antenna monitor sampling system is temporarily out
of service for repair or replacement, the station may be operated, pending
completion of repairs or replacement, for a period not exceeding 120 days
without further authority from the FCC if all other operating parameters,
and the field monitoring point values are within the limits specified on the
station authorization.
(c) If conditions beyond the control of the licensee prevent the restoration
of the monitor to service within the allowed period, an informal letter
request in accordance with Sec. 73.3549 of the Commission's rules must 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.
(d) If an authorized antenna monitor is replaced by another antenna monitor,
the following procedure shall be followed:
(1) Temporary authority shall be requested and obtained from the Commission
in Washington to operate with parameters at variance with licensed values,
pending issuance of a modified license specifying new parameters.
(2) Immediately before the replacement of the antenna monitor, after a
verification that all monitoring point values and the common point current
reading are within the limits or tolerances specified in the rules, the
following indications must be recorded for each radiation pattern: Final
plate current and plate voltage, common point current, antenna monitor phase
and current indications, and the field strength at each monitoring point.
(3) With the new monitor substituted for the old, all indications specified
in paragraph (d)(2) of this section, again must be read. If no change has
occurred in the indication for any parameter other than the indications of
the antenna monitor, the new antenna monitor indications must be deemed to
be those reflecting correct array adjustments.
(4) If it cannot be established by the observations required in paragraph
(d)(2) of this section that the common point current reading and the
monitoring point values are within the tolerances or limits prescribed by
the rules and the instrument of authorization, or if the substitution of the
new antenna monitor for the old results in changes in these parameters, a
partial proof of performance shall be executed and analyzed in accordance
with Sec. 73.154.
(5) An informal letter request for modification of license shall be
submitted to the FCC, Attention: Audio Division, Media Bureau in Washington,
DC within 30 days of the date of monitor replacement. Such request shall
specify the make, type, and serial number of the replacement monitor, phase
and sample current indications, and other data obtained pursuant to this
paragraph (d).
(e) The antenna monitor must be calibrated according to the manufacturer's
instructions as often as necessary to ensure its proper operation.
(Secs. 4, 5, 303, 48 Stat., as amended, 1066, 1068, as amended, 1082, as
amended; 47 U.S.C. 154, 303. Interpret or apply secs. 301, 303, 307, 48
Stat. 1081, 1082, as amended, 1083, as amended, 47 U.S.C. 301, 303, 307)
[ 38 FR 1918 , Jan. 19, 1973]
Editorial Note: ForFederal Registercitations affecting Sec. 73.69 see the List
of CFR Sections Affected, which appears in the Finding Aids section of the
printed volume and on GPO Access.
Goto Section: 73.68 | 73.72
Goto Year: 2007 |
2009
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