Sec. 74.651  Equipment changes.

    (a) Commission authority, upon appropriate formal application (FCC 
Form 313) therefor, is required for any of the following equipment 
changes:
    (1) Replacement of a specifically authorized transmitter by a 
transmitter that is not type accepted or notified for operation under 
this subpart pursuant to Sec. 74.655(c).
    (2) A change in the frequency of the operating channel or the 
transmitter output power.
    (3) A change in the location of the TV broadcast auxiliary station 
transmitter or transmitting antenna authorized for use at a fixed 
location except when the relocation of the transmitter is within the 
same building.
    (4) Any change in the overall height of the antenna structure, 
except where notice to the Federal Aviation Administration is 
specifically not required under Sec. 17.14(b) of this chapter.
    (5) Any change in the direction of the main radiation lobe of the 
transmitting antenna.
    (b) Other equipment changes not specifically referred to in 
paragraph (a) of this section may be made at the discretion of the 
licensee provided that the Federal Communications Commission, Broadcast 
Auxiliary Radio Services, 1270 Fairfield Road, Gettysburg, Pennsylvania 
17325 is promptly notified in writing upon the completion of such 
changes, and that the changes are described in the notification.
    (c) Multiplexing equipment may be installed on any licensed TV 
broadcast STL, TV relay or translator relay station without authority 
from the Commission.
    (d) Any application proposing a change in the height of the antenna 
or its location must also include the Antenna Structure Registration 
Number

[[Page 425]]

(FCC Form 854R) of the antenna structure upon which it will locate its 
proposed antenna. In the event the antenna structure does not have a 
Registration Number, either the antenna structure owner shall file FCC 
Form 854 (``Application for Antenna Structure Registration'') in 
accordance with part 17 of this chapter or the applicant shall provide a 
detailed explanation why registration and clearance are not necessary.

[ 28 FR 13718 , Dec. 14, 1963, as amended at  38 FR 6827 , Mar. 13, 1973;  47 FR 54448 , Dec. 3, 1982;  47 FR 55938 , Dec. 14, 1982;  49 FR 7131 , Feb. 27, 
1984;  58 FR 19776 , Apr. 16, 1993;  61 FR 4368 , Feb. 6, 1996]