AN/MTA-4A

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This Thelephone Terminal Group was housed in a S-180/MTA-4 (modified S-141/G) and later in a modified S-280B/G Shelter. The AN/MTA-4A is together with the AN/MTA-3A Thelephone Switchboard Group part of the AN/MTC-1 Central Office, Telephone, Manual. The shelter on the photographs is still a S-180/MTA-4 apparently modified to MTA-4A standards:

S-141.G.MTA-4A19, 14-4-2014.bmp.jpg S-141.G.MTA-4A 18, 14-4-2014.bmp.jpg S-141.G.MTA-4A 01, 14-4-2014.bmp.jpg S-141.G.MTA-4A 02, 14-4-2014.bmp.jpg S-141.G.MTA-4A 03, 14-4-2014.bmp.jpg S-141.G.MTA-4A 08, 14-4-2014.bmp.jpg S-141.G.MTA-4A 04, 14-4-2014.bmp.jpg S-141.G.MTA-4A 13, 14-4-2014.bmp.jpg

Major Components

1 Shelter S-180/MTA-4A (a modified S-141B/G

3 Main Distribution Frames TA-257/TTC

2 Line Relays TA-223A/TTC

1 Line Relay TA-226A/TTC

1 Power Distribution Panel SB-1032/TTC

4 Batteries BB-46

3 Telephone Sets TA-312/PT

Reference File

  • TM 11-5805-284-14
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