MAINTENANCE
Section I. OPERATOR'S MAINTENANCE
Antenna Group AN/GRA-50 are lined out
12. Scope of Operator's Maintenance
in the figures. Instructions for the use
a. The following is a list of mainte-
of the form appear on the form.
nance duties normally performed by the
operator of the antenna assembly. Spe-
14. Operator's Visual Inspection
cial tools or test equipment is not re-
When the antenna assembly fails to op-
quired.
erate properly, disconnect the radio set -
b. Operator's maintenance for the an-
from the power source and check the items
tenna assembly consists of the following:
given below. Do not check any item with
(1) Preventive maintenance (para 13).
the power on.
(2) Visual inspection (para 14).
a. Inspect all electrical connections of
13. Operator's Preventive Maintenance
the antenna assembly for tightness and
corrosion.
DA Form 11-238 (fig. 8 and 9) is a pre-
b. Inspect the insulator for cracks or
ventive maintenance checklist to be used
chips and dirt.
by the operator. Items not applicable to
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