Sec. 90.173  Policies governing the assignment of frequencies.

    (a) The frequencies which ordinarily may be assigned to stations in 
the services governed by this part are listed in subparts B, C, D, E, 
and F of this part. Frequencies other than those listed in subparts B, 
C, D, and E may be assigned in the 150-174 MHz, 421-430 MHz, 450-470 
MHz, and 470-512 MHz bands, provided such applications are accompanied 
by a showing of frequency coordination in accordance with the 
requirements of Section 90.175. Except as otherwise specifically 
provided in this part, frequencies assigned to land mobile stations are 
available on a shared basis only and will not be assigned for the 
exclusive use of any licensee.

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