[Code of Federal Regulations]
[Title 47, Volume 2]
[Revised as of October 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 47CFR73.158]

[Page 42]
 
                       TITLE 47--TELECOMMUNICATION
 
        CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED)
 
PART 73_RADIO BROADCAST SERVICES--Table of Contents
 
                     Subpart A_AM Broadcast Stations
 
Sec.  73.158  Directional antenna monitoring points.

    (a) When a licensee of a station using a directional antenna system 
finds that a field monitoring point, as specified on the station 
authorization, is no longer accessible or is unsuitable because of 
nearby construction or other disturbances to the measured field, an 
application to change the monitoring point location, including FCC Form 
302-AM, is to be promptly submitted to the FCC in Washington, DC.
    (1) If the monitoring point has become inaccessible or otherwise 
unsuitable, but there has been no significant construction or other 
change in the vicinity of the monitoring point which may affect field 
strength readings, the licensee shall select a new monitoring point from 
the points measured in the last full proof of performance. A recent 
field strength measurement at the new monitoring point shall also be 
provided.
    (2) Alternatively, if changes in the electromagnetic environment 
have affected field strength readings at the monitoring point, the 
licensee shall submit the results of a partial proof of performance, 
analyzed in accordance with Sec.  73.154, on the affected radial.
    (3) The licensee shall submit an accurate, written description of 
the new monitoring point in relation to nearby permanent landmarks.
    (4) The licensee shall submit a photograph showing the new 
monitoring point in relation to nearby permanent landmarks that can be 
used in locating the point accurately at all times throughout the year. 
Do not use seasonal or temporary features in either the written 
descriptions or photographs as landmarks for locating field points.
    (b) When the description of the monitoring point as shown on the 
station license is no longer correct due to road or building 
construction or other changes, the licensee must prepare and file with 
the FCC, in Washington, DC, a request for a corrected station license 
showing the new monitoring point description. The request shall include 
the information specified in paragraphs (a)(3) and (a)(4) of this 
section, and a copy of the station's current license. A copy of the 
description is to be posted with the existing station license.

[66 FR 20757, Apr. 25, 2001]