Sec. 90.465  Control of systems of communication.

    (a) Depending on design considerations, control of a system of 
communication may be exercised in varying ways. In single frequency 
simplex, base/mobile operations, control may be exercised by the control 
operator at the fixed control point. In mobile relay systems, where 
there is an associated control point or control station, control may be 
exercised by the operator at the control point or control station. In 
mobile-only systems, control may be exercised by the mobile operator. In 
communication systems involving multiple base stations or fixed relays 
control of the system may result from a combination of factors and 
considerations, including control by a fixed control point operator at 
some point within the system of communication or control by the mobile 
station operator of the licensee.
    (b) In internal systems, as defined at Sec. 90.7 control may be 
maintained by conforming the system to the requirements of Secs. 90.471 
through 90.475.
    (c) In interconnected systems, as defined at Sec. 90.7 control may 
be maintained by conforming operation and system design to that 
permitted at Secs. 90.477 through 90.483.
[43 1997 FR 54791 , Nov. 22, 1978, as amended at  54 FR 39740 , Sept. 28, 1989]