Sec. 90.469  Unattended operation.

    (a) Subject to the provisions of Secs. 90.243, 90.245, and 90.247, 
mobile relay, fixed relay, and mobile repeater stations are authorized 
for unattended operation; and the transmitter control point requirements 
set out at Secs. 90.463 through 90.465 shall not apply.
    (b) Self-activated transmitters may be authorized for unattended 
operation where they are activated by either electrical or mechanical 
devices, provided the licensee adopts reasonable means to guard against 
malfunctions and harmful interference to other users.

                  Internal Transmitter Control Systems