f. Remove any obstructions from the air inlets (front) and air
exhausts (rear) of the power amplifier and antenna coupler.
21. WEEKLY PREVENTIVE MAINTENANCE CHECKS AND SERVICES. Now that
you
know the daily maintenance routine for radio set AN/GRC-193, we
are
now ready to look at the operator's preventive maintenance checks
and
services. These checks and services must be performed every time
the
radio set is used or at least once weekly.
Table 6.
Operator's preventive maintenance checks and services.
B - Before
D - During
34