automatic radio compass
automatic range tracking
automatic reading
automatic reasoning
automatic record changer
automatic recovery program
automatic redundancy
automatic regulator
automatic relay
automatic release
automatic request for repetition
automatic restart
automatic retransmitter
automatic ringing
automatic scan
automatic scrolling
automatic search
automatic search jammer
automatic segmentation
automatic selectivity control
automatic sending receiving (ASR)
automatic sequence
automatic shutdown
automatic signaling
Automatic stabilizers
automatic starter
automatic starting motor
automatic station
automatic switchboard
automatic switching