PS Magazine - TB 43-PS-586

PS, The Preventative Maintenance Monthly

ISSUE 586

SEPTEMBER 2001
PS Magazine - TB 43-PS-586 - Page 26 of 31
PS 586
SEP 01
53
W
ant to monitor radio transmissions without the use of external speakers? Want a
quieter and more secure environment while receiving radio messages?
If you answered yes, take that speaker off the hood of your HMMWV and replace
it with an earphone cable, NSN 5995-01-483-0536, and a 10-ft extension cable,
Plug the extension cable into the
AUDIO OUT receptacle at the top of your RT.
Connect the earphone cable to the extension cable. Turn off any
SINCGARS speak-
ers you have hooked up. Now you, or your commander, are free to roam up to 10
feet away away from the radio and monitor radio traffic without sharing the infor-
mation with everyone in the surrounding area.
It also works with your manpack RT and any other radio having a standard 329/U
audio connector.
Both cables are water resistant
and
joined together with a
quick-disconnect. You must have
the extension cable to use the
earphone cable.
SINCGARS Vehicular Antenna.
..
Signals Soar with Clean Contacts
Dirty and corroded contacts on the AS-3900 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. so heed these tips for clean contacts…
Get extension cable, NSN 5995-01-483-0537,
and earphone cable, NSN 5995-01-483-0536
Unhook the RF cable before you
begin cleaning. Don't take a
chance on getting burned.
After cleaning,
apply a light
coat of silicone
compound, NSN
on the top and
bottom element
contacts. That'll
help protect
against corrosion.
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 the contacts down with
isopropyl alcohol.
Unscrew the top and bottom
antenna elements and clean the
contacts with isopropyl alcohol,
soft cloth. Clean the contact on
the antenna base the same way.
If you remove 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 element, put a rubber dust cap,
NSN 5340-01-316-0883, over the antenna
base's contact to keep it clean and dry.
SINCGARS…
listen!
we’ve found
their head-
quarters!
586. 52-53 (C)
8/3/01
3:57 PM
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