§  90.305   Location of stations.

   (a) The transmitter site(s) for base station(s), including mobile relay
   stations, shall be located not more than 80 km. (50 mi.) from the
   geographic center of the urbanized area listed in §  90.303.

   (b) Mobile units shall be operated within 48 km. (30 mi.) of their
   associated base station or stations. Such units may not be operated
   aboard aircraft in flight except as provided for in §  90.315(i).

   (c) Control stations must be located within the area of operation of
   the mobile units.

   (d) Base and control stations shall be located a minimum of 1.6 km. (1
   mi.) from local television stations operating on UHF TV channels
   separated by 2, 3, 4, 5, 7, and 8 TV channels from the television
   channel in which the base station will operate.

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