Goto Section: 73.61 | 73.68 | Table of Contents
FCC 73.62
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 73.62 Directional antenna system operation and tolerances.
(a) Each AM station operating a directional antenna must maintain the
relative amplitudes of the antenna currents, as indicated by the antenna
monitor, within 5% of the values specified on the instrument of
authorization. Directional antenna relative phases must be maintained within
3 degrees of the values specified on the instrument of authorization.
(b) In the event of a failure of system components, improper pattern
switching or any other event that results in operation substantially at
variance from the radiation pattern specified in the instrument of
authorization for the pertinent time of day, operation must be terminated
within three minutes unless power can be reduced sufficiently to eliminate
any excessive radiation. See Sec. 73.1350(e).
(1) Any variation of operating parameters by more than ±15 percent sample
current ratio or ±10 degrees in phase, any monitor point that exceeds 125
percent of the licensed limit, or any operation at variance that results in
complaints of interference shall be considered operation substantially at
variance from the license and will require immediate corrective action.
(2) [Reserved]
(c) In the event of minor variations of directional antenna operating
parameters from the tolerances specified in paragraph (a) of this section,
the following procedures will apply:
(1) The licensee shall measure and log every monitoring point at least once
for each mode of directional operation. Subsequent variations in operating
parameters will require the remeasuring and logging of every monitoring
point to assure that the authorized monitoring point limits are not being
exceeded. The licensee will be permitted 24 hours to accomplish these
actions; provided that, the date and time of the failure to maintain proper
operating parameters have been recorded in the station log.
(2) Provided each monitoring point is within its specified limit, operation
may continue for a period up to 30 days before a request for Special
Temporary Authority (STA) must be filed, pursuant to paragraph (c)(4) of
this section, to operate with parameters at variance from the provisions of
paragraph (a) of this section.
(3) If any monitoring point exceeds its specified limit, the licensee must
either terminate operation within three hours or reduce power in accordance
with the applicable provisions of Sec. 73.1350(d), in order to eliminate any
possibility of interference or excessive radiation in any direction.
(4) If operation pursuant to paragraph (c)(3) of this section is necessary,
or before the 30-day period specified in paragraph (c)(2) of this Sec. expires,
the licensee must request a Special Temporary Authority (STA) in accordance
with section 73.1635 to continue operation with parameters at variance
and/or with reduced power along with a statement certifying that all
monitoring points will be continuously maintained within their specified
limits.
(d) In any other situation in which it might reasonably be anticipated that
the operating parameters might vary out of tolerance (such as planned array
repairs or adjustment and proofing procedures), the licensee shall, before
such activity is undertaken, obtain a Special Temporary Authority (STA) in
accordance with Sec. 73.1635 in order to operate with parameters at variance
and/or with reduced power as required to maintain all monitoring points
within their specified limits.
[ 72 FR 44422 , Aug. 8, 2007]
Goto Section: 73.61 | 73.68
Goto Year: 2007 |
2009
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