Radio-Telephone Aids Police (Sep, 1935)
Radio-Telephone Aids Police
MOTOR PATROLMEN, through the latest development in police communication, perfected by Bell Telephone laboratories, can now carry on a two-way conversation with headquarters without leaving their cars. The radio car transmitter weighs but 20 pounds, has a power of 5 watts, and is crystal controlled. The sound of the patrolman’s voice automatically puts the transmitter on the air.