TA-341/TT Touch Tone Desk Set
NSN:5805-00-910-8844
© Brooke Clarke,
N6GCE
General Information
The TA-341/TT
is a four-wire, transistor, local-battery
telephone intended for use in sheltered areas. It is designed for
use with tactical automatic switches but also can be used in a
point-to-point mode. Up to four sets can be bridged across a single
four-wire line for extension service. DTMF tones activated by a
push-button key sender are used for signaling. Technical
Characteristics
Range. . . . . . . . . . .3 km (2 mi) from AN/TTC-38 under worst
conditions
Type of Operation. . . . . . . . . . . . . . . . . .Local or common
battery
Signaling (Outgoing) . . . . . . . . . . . . . . . . . .900 to 3400
Hz
DTMF
Signaling (Incoming) . . . . . . . . . . . . . . . . . . . . 90 V
AC,
20 Hz
Type of Signal . . . . . . . . . . . . . . .Audible tone, adjustable
volume
Power Requirement. . . . . . . . . . . . 6 V DC (four BA-42s or
equivalent) "C" cells
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2 kg
(7
lb)
Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10"
wide, 9" deep and 4" high. For comparison a Bell
System
500 desk set is <5" wide, 8 1/2" deep and 4 1/2"
high. The TA-341 takes up more than twice the desk
space!
Why so big? ANs. maybe becuase this phone supports three modes of
operation (D.C. Supervision, A.C Supervision and Point to Point with
either 2 or 4 wire connections.
Sheltered areas means out of the weather, this is a desk phone not a
field phone.
The phone comes in a canvas carrying case that is nicley fitted to
the
TA-341/TT.
There at least 3 versions, TA-341, TA-341A and TA-341B.
Supervisory Modes
Connection to the Public Switched Telephone Netowrk (PSTN)
- Install 4 each "C" batteries in the battery compartment
acording
to the diagram on the bottom of the phone.
- Switch to D.C. SUPV mode of operation.
- Connect a standard modular cord to the Red and Green
terminals.
- Leave the Black and White terminals open.
AC Supervision Mode
When you talk the handset off hook a 2,248 Hz tone is sent
out.
When the handset is placed back on hook a 2,595 Hz tone is sent
for 6
seconds then stops.
Point to Point
When the handset is lifted a 572.7 Hz tone iis generated on the
Green
and Black Tx pair for 2 seconds to ring the other TA-341 phone.
Manuals
From the ETM web page, some are "D" and not available to
civilians.
PIN |
TM/EM Number |
Publication Title (partial) |
021889 |
TM
11-5805-384-12 |
TELEPHONE
TA-341B/TT (NSN 5805-01-039-3499) |
048381 |
TM
11-5805-384-20P |
TELEPHONE
SET, TA-341B/TT (NSN 6605-00-179-8441) |
048393 |
TM
11-5805-384-30P |
TELEPHONE
SET, TA-341B/TT (NSN 5805-01-039-3499) |
052296 |
TM
11-5805-384-30 |
TELEPHONE
SET, TA-341B/TT (NSN 5805-01-039-3499) |
052328 |
TM
11-5805-384-12-HR |
TELEPHONE SET
TA-341B/TT (NSN 5805-01-039-3499) |
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