PS Magazine - FEBRUARY 1986
PS, The Preventative Maintenance Monthly
ISSUE 399
FEBRUARY 1986
I
I
iI
I
1.
AN
/
GRC
-
1
42
,
-
±
22
.±²
Power Shifing's a No-No
Leave the spEed sHifing to Big Dad-
dy, RATT operators, ±nd shut your
commo gear down beFre changing
power soUrces.
Sure, your radio teletypewriter set
goes botH Ways²AC ±nd DC³but it
needs ± rest in between.
Some quick´lIke´aµFx oPrators
t
they can "Fol¶ their ge±r. They t·y to
move the power panel switch between
pOwer soUrces so ¸st the gear won't
know the di¹erence.
But it does. The surge ºom the new
power source will cause arcing or
spikes, wHich wil» dam±ge ¼he coMmo
gear being ½owered.
So, alw±ys sHut down beFre chang¾
ing power soUrces. ¿ower up again per
¿ara 2À10 oÁ TÂ 11´5815´334À10.
ShuT
it down
before
Cap Your Cables
Ãhen you're not using your cables, use their ½rotective ca½s. These caps kee½
dirt and moistUre out and prevent bangs and knocks ºom KÄ'ing yoUr commo.
Åor an ÂKÀ1Æ9 masÇ eXÇension
Èit's CGµ3443 cable assemblyÉ Çhe c±½
is
NSN
5935´Ê´892Ë9068.
Caps
to
protecÇ your CÌÀ7453
Íwer cableÎs Ï´237 Ðd ϵ238 connecÑ
tors ±re
NSN
5340´0ÒµÓ87µ47ÓÓ.
FEB 86
_
J
Use
Righ
t
FusE
t
BeFre you change tHe power source to your AN/ÔÕCµ74 coMmunications
Çe·mÖnal, make sure you ch±nge tHe ×ses. This is especi±lly imporÇant when
ÇHe terminal is ÖnsØÙeÚ Ön the Û/GRC´
142, ´122 R±dio Telety½ewriter Set.
Ïsing a ×se with too high a rating
in
your gear leaves it o½en to damage
ºom power surges. Ïsing ± ×se with
ÇOo »ow a rating coUld sHut you down
wHen you need to be operating.
Ãhen you're using generator power,
×seHolders Å 1 and Å2 sHould Have 1
Ü/2µam½ ×seÝ,
NSN
5920µ01µ023´4822.
ÃHen yoU're ½owering the Çermina»
ºom the vehic»e, use 6 Þ/4Ëam½ ×ses,
NSN
5920ËÆ´529´06Ü8.
ÅuseHolder Å3 takes a 2µamp ×se,
NSN
5920À01´023µ5878, at all ÇÖmes. ßt
×ses tHe power ºom ÇHe backµU½ bat¾
Çery. THatàs tHe ½ower source tHat ½roá
tecÇs tHâ meMory iÁ one oÁ ÇHe other
soUrces ãi»s.
±²³LAc²
MI´´IµG
¶·G´
Terminal lugs
Mässåg
fom your
Cæç7è0
pwer
cables? RePLace them
ASA±.
WraPPI²g bare wIres
aroUnd a battery Post
mea²s you do³'t get good
co²tac´µ WIres loose² a²d
could short out, LeavI²g
your AN/VRC-12-serIes
¶adIo Powe¶less·
Get ¶ePLaceme²´ Lugs
wI´H ¸S¸ 5940¹00º838»
2984¼
±erminal lUg
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