2.
TA-312/PT and TA-43 PT telephone sets.
Status: STD-A; NSN: 5805-00-543-0012 (TA-312/PT)
STD-B; NSN: 5805-00-503-2775 (TA-43/PT)
General Information
The TA-312/PT and TA-43/PT are 2-wire, battery-operated field telephone They can be utilized in a
point-to-point wire system or in any 2-wire ringdown subscriber position of a telephone communications
system. The handset H-60 contains a PUSH-TO-TALK switch which connects power for talking. The
TA-312/PT has a built-in receptacle connector U-79/U for use with a headset and an associated EXT-
INT switch; the TA-43/PT does not. The TA-43/PT is being replaced by the TA-312/PT. TA-955 dual
tone multifrequency (DTMF) adapter, allows pushbutton operational interface with automatic analog
switches.
Technical Characteristics
Range:
Wet....................................................................................... Approximately 22.5 km (14 mi) on
WD-1/TT. (36 dB working limit)
Dry....................................................................................... Approximately 36.4 km (22 mi) on
WD-1/TT (36 dB working
limit)
Type of Operation:
Common Battery..................................................................Voice transmission and signaling
power supplied by switchboard
Local battery........................................................................ Voice transmission power supplied
by two BA-30s, signaling power is
supplied by a hand-crank
Common-Battery
Signaling.............................................................................. Signaling power supplied by
switchboard, voice transmission
provided by two BA-30s
Signaling (Outgoing)........................................................... Hand generated, 90 to 100 V AC,
20 Hz
Signaling (Incoming)........................................................... Audible tone, adjustable volume
1-7
SS 0029
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