a. CB and CBS operation using H-144( )/U. Make sure the H-60/PT is seated firmly in the
retaining cradle. Operate the INT-EXT switch to EXT and wait for the operator to answer. For CBS
operation, press the PRESS-TO-TALK switch to TALK and release it to listen. For CB operation, the
PRESS-TO-TALK switch is not used. When the call is terminated, place the INT-EXT switch to INT.
Table 1-1. Controls and indicators.
b. LB operation using H-60/PT. Place the INT-EXT switch to INT. Make sure the H-60/PT is
seated firmly in the retaining cradle. Turn the handcrank rapidly a few turns. Remove the H-60/PT
from the retaining cradle and wait for the operator or called party to answer. Press the PRESS-TO-
TALK switch to TALK and release it to listen. When the call is terminated, replace the H-60/PT in the
retaining cradle and turn the handcrank rapidly a few turns. This will signal the switchboard that the call
has been completed.
SS0441
1-6
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