Sec.  22.813   Technical channel pair assignment criteria.

   The rules in this section establish technical assignment criteria for the
   channel pairs listed in  Sec. 22.805. These criteria are intended to provide
   substantial service volumes over areas that have significant local and
   regional  general  aviation activity, while maintaining the continuous
   nationwide in-route coverage of the original geographical layout.

   (a) Distance separation for co-channel ground stations. The FCC may grant an
   application requesting assignment of a communication channel pair to a
   proposed ground transmitter only if the proposed antenna location is at
   least 800 kilometers (497 miles) from the antenna location of the nearest
   co-channel ground transmitter in the United States, its territories and
   possessions; and 1000 kilometers (621 miles) from the antenna location of
   the nearest co-channel ground transmitter in Canada.

   (b) Dispersion. The FCC may grant an application requesting assignment of a
   communication channel pair to a proposed ground transmitter only if there
   are no more than five different communication channel pairs already assigned
   to ground transmitters with antenna locations within a 320 kilometer (199
   mile) radius of the proposed antenna location.