Telephone Set TA-838A/TT

The TA-838A/TT is a ruggedized, digital processor-controlled telephone set designed for military use. It operates with exceptionally low power consumption and supports multiple operational modes, including various wire configurations and supervision types. This telephone set is tailored to integrate seamlessly with military switching centers like AN/TTC-25, AN/TTC-38 (V), AN/TTC-39, or SB-3614, ensuring reliable communication in diverse conditions.

National Stock Number (NSN):

5805-01-125-5976

Physical features:

Input/Output Impedance: 600 ohms nominal
Voice Frequency Range: 300 to 3500 Hz
DTMF Signaling: 16 Key CCITT standard
Seize Signal: 2250 Hz, -7 to –2 dBm
Release Signal: 2600 Hz, -7 to –2 dBm
Point to Point Signal: 570 Hz, -7 to –2 dBm
Seize Acknowledge and Ring Detection: 555 to 585 Hz, -24 dBm min.
Audible Alarm: 900 to 3500 Hz, 77 dB re .0002 Dynes/sq cm min. at 3 feet (9.2 meters)
Typical LB Current: 300 ua On-Hook, 5 mA Ring, 1.8 mA Off-Hook
Battery Requirement: 4.4 to 6.4 Volts (Four BA-42 or “C” Cells)
Operating Temperature Range: -35°C to +66°C
Dimensions: Height: 6 inches, Depth: 10 inches, Width: 6 inches
Weight: 6.5 lbs.
Compliance: Meets MIL-T-49110 (EL), MIL-STD-810 C for environmental conditions, and MIL-STD-461 A for electromagnetic interference

Service Operational Modes:
- 2 Wire, DC Supervision, DTMF Signal, CB
- 2 Wire, DC Supervision, DTMF Signal, LB
- 4 Wire, DC Supervision, DTMF Signal, CB
- 4 Wire, DC Supervision, DTMF Signal, LB
- 4 Wire, AC Supervision (2250 Hz Seize, 2600 Hz Release), DTMF Signal, LB
- 4 Wire, AC Supervision (2250 Hz Seize, 2600 Hz Release), DTMF Signal, CB
- Point to Point, 570 Hz Ring Burst, LB

Please e-mail us for pricing:

[email protected]