Sec.  97.315   Certification of external RF power amplifiers.

   (a)  Any  external  RF  power  amplifier (see  Sec. 2.815 of the FCC Rules)
   manufactured  or  imported for use at an amateur radio station must be
   certificated for use in the amateur service in accordance with subpart J of
   part 2 of the FCC Rules. No amplifier capable of operation below 144 MHz may
   be constructed or modified by a non-amateur service licensee without a grant
   of certification from the FCC.

   (b) The requirement of paragraph (a) does not apply if one or more of the
   following conditions are met:

   (1) The amplifier is constructed or modified by an amateur radio operator
   for use at an amateur station.

   (2) The amplifier was manufactured before April 28, 1978, and has been
   issued a marketing waiver by the FCC, or the amplifier was purchased before
   April 28, 1978, by an amateur radio operator for use at that operator's
   station.

   (3) The amplifier is sold to an amateur radio operator or to a dealer, the
   amplifier is purchased in used condition by a dealer, or the amplifier is
   sold to an amateur radio operator for use at that operator's station.

   (c) Any external RF power amplifier appearing in the Commission's database
   as certificated for use in the amateur service may be marketed for use in
   the amateur service.

   [ 71 FR 66465 , Nov. 15, 2006]