PS Magazine - TB 43-PS-618

PS, The Preventative Maintenance Monthly

ISSUE 618

MAY 2004
PS Magazine - TB 43-PS-618 - Page 22 of 33
• Clean stubborn dirt and corrosion off the top element contact with 550 cord, NSN
4020-00-014-6699. Loop the cord once around the contact and pull it back and
forth to clean out the ridges. Then wipe it down with isopropyl alcohol.
• After cleaning, apply a light
coat of silicone compound,
the top and bottom element
contacts. That’ll help protect
against corrosion.
• If you remove just the top element for any
length of time, put a piece of electrical tape over
the opening of the bottom element to keep out
dirt and moisture. If you remove the bottom ele-
ment, put a rubber dust cap, NSN 5340-01-316-
0883, over the antenna base’s contact to keep it
clean and dry.
PS 618
MAY 04
40
D
irty and corroded contacts on the SINCGARS vehicular antenna mean intermittent
or broken traffic. Worse yet, dirt and corrosion can lead to high reflected RF power,
which can damage the receiver-transmitter.
Here are a few tips for clean contacts:
• Unhook the RF cable before
you begin cleaning. Don’t take
a chance on getting burned.
• Unscrew the top and bottom antenna elements
and clean the contacts with isopropyl alcohol,
NSN 6810-01-190-2538, and a soft cloth. Clean
the contact on the antenna base the same way.
Clean base contacts
Unhook
cable
first
Apply grease top and bottom
Cap missing? Replace it!
Nuts!
there’s some-
thing wrong
with the radio!
SINCGARS Vehicular Antenna…
see? some-
times it’s
not
me, it’s the
antenna!
Hey!
we’re
stuck trying to
cross this river!
Anyone hear us!?
618. 40-41 (C)
3/29/04
10:47 AM
Page 1
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