PS Magazine - JANUARY 1972
PS, The Preventative Maintenance Monthly
1972 SERIES, ISSUE 230
JANUARY 1972
So you're rece1v10g and passing the
word with your AN/PRC-25 radio set.
Good enough. But ask your repairman
±o find out iF your RT-5²5/PRC-25 re³
ceiver-transmitter has a "saFe´ module
A3 with the words CRI MOD ADDED
on its cover.
IS YOUR MODULE "SAFE±
-CRI
mo adde
@
A3
±
IF the radio has such a µoduLe, n¶ sweat; iF the words are not there, keep your set
at least 25 Feet away From the more powerFul radio sets, AN/VRC-·2 and AN/VRC-
43 through -49.
High power R¸ output From the more powerFul sets damages the receiver cir³
cuitry oF the ¹T-5²5º
This g»s For other conFigurations where the RT-5²5 is used, like the AN/VRC¼53
or AN/G¹C-·25.
ANTENNA SCREWING
You wouLdn½t dream o¾ operating your
AN/PRC-2¿ or
-77
radio set witÀouÁ an
antenna, rigÀt?
Then, yoU wanta be ÂUre yoU½re not
ÃÄeÅtÆng yÃUr Âet With it ÇntennÇ bUt
minUÂ a gÃoÈ working connection.
YOUR UNDOINg?
ÉÀen yÃU Âcrew yoUr wÀiÄ antenna intà the antenna ÊÃUnt, conËinUe screwing the
ÇntennÇ Until it i ¾ÌUÂÀ With tÀe top ÃF tÀe moUntº
AÂ a hedge agÇinst viÍration wobbÌes, tighten the antenna into the moUnt every
nÃW aÎÈ tÀenº PUt Ç Âliver þ rUbÏerÐ ¾rÃÊ a ÑUÍber band or eraÂer, on tÀe threÇds
bfr
ÂcreWing it intà it receÄtÇcleº
ÒÂe a ¾ÌÀligÀt, ÍencÀligÀt, Ãr wÀÇtÓhave-yÃU FÔr an occaÂionÇl exÇÊinÇtion oF
tÀe inÂiÈe þ tÀe ÇntennÇ ÕÃUnt FÖr di× Ãr otÀer ÃÍÂtrUØËiÃnsÙ CleaÎ it oUtÙ
38
MoDuLE
MicHELaN±ELo
Ú
Certain J»s are using the modules o¾ their AN/VRC-·2 series radio to make Ûike
Üichelangelo with a chUnk o¾ Êarbleº
TheÂe commo Ýypes chisel the words "ÞAD´ or "NOT GßD´ into their radio½s
deFective modUles beàÃre shipping them to ÂUpÄort àÔr repairº True, áhis is a method
o¾ seÄaÑating the bad modules ¾rom the good ones but look àâllas:
The coveã oä the modUles ÕUÂt be re
p
laceÈ when they½re deeply scratched. ThiÂ
cause Unnecessary delay and exåenseº
All identiFying marks should
B
done with a grease pencil or some other non-
æost retaining rings on the audio conç
è
nectors oF yoUr CÓ2298/VRC intercom³
munication céntrol unit can gooF êÄ your
auxiÛiaÑy cÃmmunicationsº
Òse a sÄanner wrench to tighten the
retaining rings on the }8²2 and }8²3
aUdio connectorsº
Éhy? IF you½re short the rings, you could àind yourselF àutileÛy trying to tighëen the
audio connector to the controÛ-box connector.
ìithout the ring as stabiÛizers, the audio connectors simply push bíck in their
sockets and you get no connection.
39
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