§  87.349   Frequencies.

   (a) The frequency assigned to an aeronautical utility station at an
   airport served by a control tower, RCO or FAA flight service station is
   the frequency used by the control tower for ground traffic control or
   by the flight service station for communications with vehicles. In
   addition to the ground control frequency, an aeronautical utility
   station at an airport served by a control tower or RCO may be assigned
   the tower or RCO frequency if the assignment is specifically approved
   by the FAA as provided for in § 87.347(c). The frequencies assigned are
   normally from the band 121.600-121.925 MHz.

   (b) The frequency assigned to the unicom is available to aeronautical
   utility stations on a noninterference basis at airports which have a
   part-time control tower, part-time RCO or part-time FAA flight service
   station and a unicom.

   (c) At airports which have a unicom but no control tower, RCO or FAA
   flight service station, the frequency assigned to the unicom is
   available to aeronautical utility stations on a noninterference basis.
   The frequencies available for assignment to unicoms are described in
   subpart G of this part.

   (d) At airports which have no control tower, RCO, flight service
   station or unicom, the frequency 122.900 MHz is available for
   assignment to aeronautical utility stations.

   (e) The frequency 978.0 MHz is authorized for Universal Access
   Transceiver data transmission.

   [ 55 FR 30464 , July 26, 1990, as amended at  55 FR 30908 , July 30, 1990;
    71 FR 70680 , Dec. 6, 2006]