§  5.77   Change in equipment and emission characteristics.

   (a) The licensee of a conventional, broadcast, or Spectrum Horizons
   experimental radio station may make any changes in equipment that are
   deemed desirable or necessary provided:

   (1) That the operating frequency is not permitted to deviate more than
   the allowed tolerance;

   (2) That the emissions are not permitted outside the authorized band;

   (3) That the ERP (or EIRP) and antenna complies with the license and
   the regulations governing the same; and

   (b) For conventional or Spectrum Horizons experimental radio stations,
   the changes permitted in paragraph (a) of this section may be made
   without prior authorization from the Commission provided that the
   licensee supplements its application file with a description of such
   change. If the licensee wants these emission changes to become a
   permanent part of the license, an application for modification must be
   filed.

   (c) Prior authorization from the Commission is required before the
   following antenna changes may be made at a station at a fixed location:

   (1) Any change that will either increase the height of a structure
   supporting the radiating portion of the antenna or decrease the height
   of a lighted antenna structure.

   (2) Any change in the location of an antenna when such relocation
   involves a change in the geographic coordinates of latitude or
   longitude by one second or more, or when such relocation involves a
   change in street address.

   [ 78 FR 25162 , Apr. 29, 2013, as amended at  84 FR 25690 , June 4, 2019]