Posted on Jun 25, 2014
SFC Joe S. Davis Jr., MSM, DSL
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Phone
The TA -312 Field Phone (LEGENDARY) WE CALLED THE BATTERIES BA 30S

The analog, 2-wire, battery operated TA-312/PT replaced and will interoperate with the World War II and Korean War EE-8 field phone. The rugged and reliable TA-312 was used from the 1950s through the 1980s before being superceded by the TA-838 analog field phone. TA-312's continue in use throughout the U.S. forces as well as many allied countries.

The TA-312/PT is a two-wire, battery operated field telephone. It has a
range of 38 km using WD-1 wire, and was a successor to the EE-8 field
phone used during World War II and Korea. Primarily used from 1950-
1990, it was replaced by the TA-838. It's typically stored in a canvas
bag. An optional TA-955 dual tone multifrequency (DTMF) adapter
allows push button operational interface with automatic analog switches.
To install the TA-312 telephone:
* Strip away one-half inch of insulation from each strand of the WD-1
wire line.
* Depress the spring-loaded line binding posts and insert one strand of
the wire into each post. It doesn't matter which one goes where.
* Adjust buzzer volume control knob to LOUD.
* Turn the INT-EXT switch to INT (Internal). The TA-312 has the
capability of either using the standard H-60/PT handset (INT) or an
external H-144/U headset (EXT).
* Turn the circuit selector switch to LB. (Local battery).
The TA-312
http://www.personal.psu.edu/wmc12/telephones/TA-312.html[6/25/2014 10:03:37 PM]
* Insert the two BA-30 batteries into the battery compartment (one up
and one down). Two D-Call batteries work just as well.
* Seat the handset firmly in the retaining cradle.
* Turn the handcrank rapidly a few turns. Remove the handset from the
retaining cradle and wait for the other operator to answer.
* Depress the push-to-talk switch to talk. Release the push-to-talk
switch to listen.
The Technical Manual used for the TA-312 is TM 11-5805-201-12.
Posted in these groups: Train2 TrainingCommunications
Edited >1 y ago
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Responses: 112
SFC Rich Carey
18
18
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Awesome.... I remember asking someone to hold the wires so we can see if the phone was good, oh look the phone is good.... I understand it was good for fishing too.
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CSM Brigade Command Sergeant Major
CSM (Join to see)
10 y
I had about 20 splices over a 100 yards
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SGT Edward Thomas
SGT Edward Thomas
9 y
Been there done that.
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SFC Joe S. Davis Jr., MSM, DSL
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LTC Hardware Test Engineer
LTC (Join to see)
4 y
we used to have contests to see who could hold the wires the longest.
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SGT Rik Thibodeau
16
16
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Man this brings back memories - I started my military career in the reserves as a 31K and pretty much all I did was mess with these phones and cables. I got so good at splicing that I garnered the nickname "Splice Master" in my unit. One year at our AT we had a mag drop (connection to a real telephone line) run into our switchboard and the rule was that the OPFOR was not supposed to cut the mag drop since that was our "real world" phone (this was before cell phones). Sure enough the idiots cut the mag drop so I had to go out at 2 am and follow the line through a swamp until I found the cut. There I am splicing it while my buddy held his red light on it when something suddenly dawned on me;

"Hey, this line isn't live, is i-ARRRRRRRRRRRRGGGGGGGHHHHHHHHH"

Great times man, great times.
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SSG Peter Muse
SSG Peter Muse
9 y
Sglr gps
hehe.. I was OPFOR at Ft. Jackson doing raids on reservists ARTEP'ing at Ft. Gordon and again at Hohenfels... yeah, we cut a few wires.. spliced some in and tapped the phone...I was the cutter not the tapper.. we followed the lines and captured the OP then took the HQs at daybreak.. as a CS trucker raiding CSS units it was great fun. thanks for sharing that item. Who knows this one?
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SFC Joe S. Davis Jr., MSM, DSL
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SP5 Michael Rathbun
SP5 Michael Rathbun
>1 y
I always tested out my Deutsche Bundespost landline connection (over quit a few klicks of wire) to our field exercise central switch with a sentence in Russian that can mean both "We know that you are listening, Comrades" and "We know what you are listening to, Comrades".
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SPC Ray Blaylock
SPC Ray Blaylock
4 y
SGT Jinger Jarrett - Good Old Cold Graf Been There Too much
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CSM Michael J. Uhlig
13
13
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We just used these during rotation at Hohenfels.

For those studying for the board, here's what the acronym means:

TA-312
Telephone Apparatus with three power supplies: 1 crank & two batteries (installed inverted)
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MSG Sr Maint Rep
MSG (Join to see)
10 y
lol, i remember that thing. would have to run wire for it to all the OP points and guard shacks in the field. I remember having to wind it up just to use it and you could give someone a good shock if you took the civer off, lol.
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SFC Joe S. Davis Jr., MSM, DSL
SFC Joe S. Davis Jr., MSM, DSL
10 y
Thanks CSM Michael J. Uhlig, its amazing how you go almost 25 years not knowing until you have a discussion. Thank you candidly for the information.
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