LESSON 5
OPERATION OF AMPLIFIER TELEPHONES
CREDIT HOURS ........................................................... 2
TEXT ASSIGNMENT ................................................... TM 11-2059, para 3-46
MATERIALS REQUIRED............................................. None
LESSON OBJECTIVE ................................................... To familiarize you with the installation, operation, and
maintenance of amplifier telephones
SUGGESTIONS............................................................. Some changes have been made in the forms used and
records kept of organizational maintenance since TM 11-
2059 was printed. However, the actions performed and
the checks made are essentially as shown in the TM.
LESSON EXERCISES
In each of the following exercises, select the ONE answer that BEST completes the statement or answers the
question. Indicate your solution by circling the letter opposite the correct answer in the subcourse booklet.
1. Telephones TP-9 and TA-264/PT have similar operating characteristics and can be used interchangeably.
Compared with ordinary local-battery sets, these telephones have the advantage of being
a. lighter in weight.
b. simpler to operate.
c. more ruggedly constructed.
d. capable of transmitting over longer lines.
2. The attenuation of voice frequencies over field wire is approximately 1 db per kilometer in wet weather.
Therefore, the maximum range of a point-to-point circuit which uses Telephone Sets TA-264/PT over field wire is
approximately
a. 15 km.
c. 55 m.
b. 23 km.
d. 65 km.
410 L5
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