[Code of Federal Regulations]
[Title 47, Volume 4]
[Revised as of October 1, 2009]
From the U.S. Government Printing Office via GPO Access
[CITE: 47CFR73.61]

[Page 26]
 
                       TITLE 47--TELECOMMUNICATION
 
        CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED)
 
PART 73_RADIO BROADCAST SERVICES--Table of Contents
 
                     Subpart A_AM Broadcast Stations
 
Sec. 73.61  AM directional antenna field strength measurements.

    (a) Each AM station using a directional antenna with monitoring 
point locations specified in the instrument of authorization must make 
field strength measurements as often as necessary to ensure that the 
field at each of those points does not exceed the value specified in the 
station authorization. Additionally, stations not having an approved 
sampling system must make the measurements once each calendar quarter at 
intervals not exceeding 120 days. The provision of this paragraph 
supersedes any schedule specified on a station license issued prior to 
January 1, 1986. The results of the measurements are to be entered into 
the station log pursuant to the provisions of Sec. 73.1820.
    (b) If the AM license was granted on the basis of field strength 
measurements performed pursuant to Sec. 73.151(a), partial proof of 
performance measurements using the procedures described in Sec. 73.154 
must be made whenever the licensee has reason to believe that the 
radiated field may be exceeding the limits for which the station was 
most recently authorized to operate.
    (c) A station may be directed to make a partial proof of performance 
by the FCC whenever there is an indication that the antenna is not 
operating as authorized.

[50 FR 47054, Nov. 14, 1985, as amended at 73 FR 64560, Oct. 30, 2008]