Sec. 90.233  Base/mobile non-voice operations.

    The use of A1D, A2D, F1D, F2D, G1D, or G2D emission may be 
authorized to base/mobile operations in accordance with the following 
limitations and requirements.
    (a) Licensees employing non-voice communications are not relieved of 
their responsibility to cooperate in the shared use of land mobile radio 
channels. See also Secs. 90.403 and 90.173(a) and (b).
    (b) Authorization for non-voice emission may be granted only on 
frequencies subject to the coordination requirements set forth in 
Sec. 90.175. Non-voice operations on frequencies not subject to these 
requirements are permitted only a secondary basis to voice 
communications.
    (c) Provisions of this section do not apply to authorizations for 
paging, telemetry, radiolocation, AVM, radioteleprinter, radio call box 
operations, or authorizations granted pursuant to subpart T of this 
part.
[ 48 FR 2794 , Feb. 3, 1983, as amended at  49 FR 48711 , Dec. 14, 1984;  56 FR 19602 , Apr. 29, 1991]