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Sound powered equipment providing facilities for talking and signaling without batteries. The maximum talking and signaling range of the TA-1( )/PT is 6.4 kilometers (4 miles) over Wire WD-1/TT. This telephone set can be used to advantage in forward areas, in switched networks having magneto signaling switchboards, in closed nets, and in point-to-point circuits. The telephone handset contains sound-powered transmitter and receiver units, a hand generator that is operated by a lever-type switch, and a push-to-talk switch. The user can receive either visual or audible-visual signaling indications during operation.