INTRODUCTION
1.
Telephone communications are of utmost importance to any commander
in peacetime or combat for the accomplishment of their unit mission. To
be able to "shoot and communicate," is the difference between success and
failure. The TA-312/PT is a 2-wire, battery operated field telephone.
It may be utilized in a point-to-point wire system or in any 2-wire ring-
down subscriber position of a telephone communications system.
2.
As a 29N telephone central office repairer, you must acquaint
yourself with the local battery/common telephone set TA-312/PT. After
you have completed this subcourse, you will be able to identify the
controls/indicators,
perform
installation
procedures,
identify
circuits/circuit components and perform troubleshooting and final testing
procedures on the TA-312/PT.
3.
This subcourse consists of three lessons, and a performance (hands-
on w/equipment) end-of-subcourse practice exercise, which are all related
to the following terminal learning objectives.
Performance (Hands-on with equipment) Terminal Learning Objective.
TASK.
Install, identify controls/circuit components, troubleshoot and
final test the TA-312/PT telephone set.
CONDITIONS. Given two TA-312/PTs, TM 11-5805-201-12, TM 11-5805-201-35
Theory of Operation Extracts, flat-tip screwdriver, wire cutters,
batteries, BA-30s (4 ea), 3 volt battery (1 ea), commo wire, multimeter,
TS-352 (or equivalent), using tactical scenario narrations and
discussions with a qualified supervisor/OJT monitor's assistance.
STANDARDS.
Correctly install, identify controls/circuit components,
troubleshoot and final test, four errors minimum, within one of two
attempts, the TA-312/PT telephone set within a time limit of 35 minutes.
Performance-Oriented (Multiple-choice).
TASK.
Install, identify controls/circuit components, troubleshoot and
final test the TA-312/PT telephone set.
CONDITIONS.
Given Lessons 1, 2, and 3 materials, pencil, paper, TM
extracts, and without supervision.
STANDARDS. Demonstrate competency of the task skills and knowledge by
correctly responding to 70 percent of the multiple-choice test covering
troubleshooting and final testing of the TA-312/PT telephone.
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