[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: 47CFR74.1251]

[Page 517-518]
 
                       TITLE 47--TELECOMMUNICATION
 
        CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED)
 
PART 74_EXPERIMENTAL RADIO, AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM 
 
  Subpart L_FM Broadcast Translator Stations and FM Broadcast Booster 
                                Stations
 
Sec.  74.1251  Technical and equipment modifications.

    (a) No change, either mechanical or electrical, except as provided 
in part 2 of this chapter, may be made in FM translator or booster 
apparatus which has been certificated by the Commission without prior 
authority of the Commission.
    (b) Formal application on FCC Form 349 is required of all permittees 
and licensees for any of the following changes:
    (1) Replacement of the transmitter as a whole, except replacement 
with a transmitter of identical power rating which has been certificated 
by the FCC for use by FM translator or FM booster stations, or any 
change which could result in the electrical characteristics or 
performance of the station. Upon the installation or modification of the 
transmitting equipment for which prior FCC authority is not required 
under the provisions of this paragraph, the licensee shall place in the 
station records a certification that the new installation complies in 
all respects with the technical requirements of this part and the terms 
of the station authorization.
    (2) A change in the transmitting antenna system, including the 
direction of radiation or directive antenna pattern.
    (3) 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.
    (4) Any change in the location of the translator or booster except a 
move within the same building or upon the same pole or tower.
    (5) Any horizontal change in the location of the antenna structure 
which would (i) be in excess of 152.4 meters (500 feet), or (ii) would 
require notice to the Federal Aviation Administration pursuant to Sec.  
17.7 of the FCC's rules.
    (6) Any change in the output frequency of a translator.
    (7) Any increase of authorized effective radiated power. FM 
translator and booster stations may decrease ERP on a modification of 
license application provided that exhibits are included to demonstrate 
that the following requirements are met:
    (i) The license application may not propose to eliminate the 
authorized horizontally polarized ERP, if a horizontally polarized ERP 
is currently authorized;
    (ii) The installed height of the antenna radiation center is not 
increased by more than two meters nor decreased by more than four meters 
from the authorized height for the antenna radiation center; and
    (iii) The station is not presently authorized with separate 
horizontal and vertical antennas mounted at different heights. Use of 
separate horizontal and vertical antennas requires a construction permit 
before implementation or changes.
    (8) Any change in area being served.
    (c) Changes in the primary FM station being retransmitted must be 
submitted to the FCC in writing.
    (d) Any application proposing a change in the height of the antenna 
structure or its location must also include the Antenna Structure 
Registration Number (FCC Form 854R) of the antenna structure upon which 
it proposes to locate its 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

[[Page 518]]

Structure Registration'') in accordance with part 17 of this chapter or 
the applicant shall provide a detailed explanation why registration and 
clearance are not required.

[35 FR 15388, Oct. 2, 1970, as amended at 45 FR 26068, Apr. 17, 1980; 47 
FR 24580, June 7, 1982; 50 FR 3525, Jan. 25, 1985; 50 FR 23710, June 5, 
1985; 55 FR 50698, Dec. 10, 1990; 61 FR 4368, Feb. 6, 1996; 63 FR 33879, 
June 22, 1998; 63 FR 36606, July 7, 1998; 65 FR 79780, Dec. 20, 2000]