Sec. 80.1019  Antenna radio frequency indicator.

    Each nonportable bridge-to-bridge transmitter must be equipped, at 
each point of control, with a carrier operated device which will provide 
continuous visual indication when the transmitter is supplying power to 
the antenna transmission line or, in lieu thereof, a pilot lamp or meter 
which will provide continuous visual indication when the transmitter 
control circuits have been placed in a condition to activate the 
transmitter.
[ 52 FR 35246 , Sept. 18, 1987]