§  97.205   Repeater station.

   (a) Any amateur station licensed to a holder of a Technician, General,
   Advanced or Amateur Extra Class operator license may be a repeater. A
   holder of a Technician, General, Advanced or Amateur Extra Class
   operator license may be the control operator of a repeater, subject to
   the privileges of the class of operator license held.

   (b) A repeater may receive and retransmit only on the 10 m and shorter
   wavelength frequency bands except the 28.0–29.5 MHz, 50.0–51.0 MHz,
   144.0–144.5 MHz, 145.5–146.0 MHz, 222.00–222.15 MHz, 431.0–433.0 Mhz,
   and 435.0–438.0 Mhz segments.

   (c) Where the transmissions of a repeater cause harmful interference to
   another repeater, the two station licensees are equally and fully
   responsible for resolving the interference unless the operation of one
   station is recommended by a frequency coordinator and the operation of
   the other station is not. In that case, the licensee of the
   non-coordinated repeater has primary responsibility to resolve the
   interference.

   (d) A repeater may be automatically controlled.

   (e) Ancillary functions of a repeater that are available to users on
   the input channel are not considered remotely controlled functions of
   the station. Limiting the use of a repeater to only certain user
   stations is permissible.

   (f) [Reserved]

   (g) The control operator of a repeater that retransmits inadvertently
   communications that violate the rules in this part is not accountable
   for the violative communications.

   (h) The provisions of this paragraph do not apply to repeaters that
   transmit on the 1.2 cm or shorter wavelength bands. Before establishing
   a repeater within 16 km (10 miles) of the Arecibo Observatory or before
   changing the transmitting frequency, transmitter power, antenna height
   or directivity of an existing repeater, the station licensee must give
   written notification thereof to the Interference Office, Arecibo
   Observatory, HC3 Box 53995, Arecibo, Puerto Rico 00612, in writing or
   electronically, of the technical parameters of the proposal. Licensees
   who choose to transmit information electronically should e-mail to:
   prcz@naic.edu.

   (1) The notification shall state the geographical coordinates of the
   antenna (NAD–83 datum), antenna height above mean sea level (AMSL),
   antenna center of radiation above ground level (AGL), antenna
   directivity and gain, proposed frequency and FCC Rule Part, type of
   emission, effective radiated power, and whether the proposed use is
   itinerant. Licensees may wish to consult interference guidelines
   provided by Cornell University.

   (2) If an objection to the proposed operation is received by the FCC
   from the Arecibo Observatory, Arecibo, Puerto Rico, within 20 days from
   the date of notification, the FCC will consider all aspects of the
   problem and take whatever action is deemed appropriate. The licensee
   will be required to make reasonable efforts in order to resolve or
   mitigate any potential interference problem with the Arecibo
   Observatory.

   [ 54 FR 25857 , June 20, 1989, as amended at  55 FR 4613 , Feb. 9, 1990;  56 FR 32517 , July 17, 1991;  58 FR 64385 , Dec. 7, 1993;  59 FR 18975 , Apr.
   21, 1994;  62 FR 55536 , Oct. 27, 1997;  63 FR 41205 , Aug. 3, 1998;  63 FR 68980 , Dec. 14, 1998;  69 FR 24997 , May 5, 2004;  70 FR 31374 , June 1,
   2005]