PS Magazine - TB 43-PS-435
PS, The Preventative Maintenance Monthly
ISSUE 435
FEBRUARY 1989
"
ruddy, dirty, corroded contacts in the antenna base will put a radio on the fritz.
You repairmen need to eyeball the horseshoe contact when your Favorite
radioman comes in with a problem. If it's Broken, replace it With NSN
5995-00±
921²0630.
If the screws are loose, tighten 'em.
If
They're gone, put in neW ones,
NS±
5305-00-054²5635³
Bent,
broken
horseshoe
knocks
out
com mo
If the contacts are corroded, shine
'em up with a pencil eraser.
²he ring with tHe horseshoe contact
must Be threaded into the antenna ele-
ment to The right depth. Use a load
tightening tool, NSN
5´20µ0´-172-
8079,
to mAke sure The r³ng is seated
at the correct deptH.
´hile you're right there, take a
closer look Between the element and the
MX-6707
matcµi¶g unit.
i
you see red,
it's the 0·ring. ²his Means The spring
contact is ¶oT touching.
AlL
you need
to do is tighten the anTenna elemenT.
¶·
See red?
Adjust spring
conTact
.
Use load-
tigHtening
tooL to
set ring
FEB ·¸
aS¹º»¼½ antenn¾ ¿ÀÁ
No Slip Clip
B
efOre heading out, make sure yo¸r
As-1729
antenna is under the clip.
If
the antenna's not under the clip,
it slips out and gets broken o¹ when
it hits something liKe a tree. ºr it can
hit an overhead power line and jolt you
or your passenger(s).
ÂmÃÄÅÆÇÈ b RÉdÊÉcËÌTÌr ÍÍÎ
TwIns-But Not ±dent²caL
W
atch o»t! ¼oth the
IM-174A
and ¼
radiacmeter can have eitHer of tWo Base
assemblies½and it m¾es a d³¿Àerence
Which baTtery coVer you use WitH
which Base assemBLy.
²he covers Look alike o»tside, But
they're di¿Àerent. ºne has a gasket and
the otHer Has no gasket. ²he gasket Ár
it is along the l³p oÀ tHe battery comÂ
parTment.
ÏEB ·¸
¶¸
Never put tHe cover w³TH no gasket
on the Base assemBly wÃTH no gaskeT.
Äoisture gets in and causes corRos³on.
²hen you've got to have your radiacÅ
meter repa³red.
Back to Top Back to Top
