About Sound
Powered Phones

Sound powered telephones are ideal, in that they function without an external power source. Earpieces and mouthpieces are identical, so a headphone could still be used if an earpiece or mouthpiece should go bad. Handsets had a pushbutton switch that had be pressed to transmit or receive., headsets were push to talk. Sound Powered phones require protection from impact, and strain on the wiring.	Typical Headphone circuits JA Captain’s battle circuit JC Weapons control 61JS Sonar information 1JV Maneuvering and docking 2JZ Damage control


Go to About Interior Communications for more systems
These graphics were from a Sea Scout manual on Sound Powered Phones, but, are the same graphics used in Navy and Coast Guard manuals.