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TELEPHONE SET TA-312A/PT

NSN: 5805-01-217-7310

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Two wire, battery operated Field Telephone Set, used as a point-to-point voice frequency (VF) wire communications link or in any two wire ringdown subscriber position of a telephone communications system. Three Modes of Operation: Local Battery (LB) and Common Battery (CB) Manual Telephone or as LB Telephone with CB signaling (CBS). Optional Tone Signaling Adapter (TA-955/PT) available, to enable interfacing the TA-312A/PT with automatic switchboards, such as the SB-3614 Tactical Switching Center. The Tone Signaling Adapter readily attaches to the TA-312A/PT, with no modifications required to the telephone.

Manufactured to Requirements of U.S. Military Specifications, including MIL-STD-454.

Utilized for All Weather Field Communications or as Desk/Wall Mounted Telephone in Fixed or Mobile Military Shelters

Service Lines Protected from Moisture and Dust

Special Circuits Reduce or Clip High Voltage Line Surges

Sidetone Balance Maintained over Wide Range of Voice Frequencies and Battery Voltages

Optional Off-Hook Security Lamp

Telephone Set Available with Optional Canvas Carrying Case and Shoulder Strap

Signal Buzzer Volume Control

Voice Frequency Range

300 to 3200 Hz

Hand Generator Ringdown Signal

20 Hz; 90 to 100 Volts

Input/Output Impedance

600 Ohms

Power Requirements

(LB) Two 1.5 Volt Batteries (CB) 48V DC Source

Operating Temperatures

-40°C to +50°C

Transmission Ranges

Field Wire, WD-1/TT – 35 Km (22 miles)
Lead Covered Cable (19 Gauge), - 48 Km (30 miles)
Open Wire Line (W-2 #14 AWG copper), 370 Km (230 miles)
Open Wire Line (W-74 #12 AWG copper) 837 Km (520 miles)

Weight

4.2 Kg (9 lbs.) with Optional Carrying Case and Local Batteries Installed

Dimensions (Approx.)

Height: 27cm (10.5”), Depth: 9.5cm (3.8”), Width: 10cm (4.0”)