PS Magazine - MAY 1986
PS, The Preventative Maintenance Monthly
ISSUE 402
MAY 1986
Keeping your radio cool is a year-
round job. It gets tougher when the
heat's on.
These summert±me suggestions will
help keep your powerful AM on the
air:
• Let the radio breathe. Keep
pubs, papers and extra gear oFf the
case. Some heat escapes th±s way.
Most heat, though, ±s sent on its
²
way by the a³plifier blowers. Make
sure they are working and that blower
vents are clear.
Make sure there's an antenna con-
nected to the radio set before you
44
MAY 86
trans³±t. Then check the whip
antenna's mast base to be sure the
contact is clean. If theRe's corros±on
chances are good the radio's
RF
output is bE±ng reflected ´o the
amplifier. Tha´ extra heat ±s a radio
k±ller.
If corros±on has set in, call on unit
³aintenance to clean ±t up.
A wire brush or sand paper cleans
the outside. A bore brusH cleans
inside the contact. Once it's clean
coat the con´act with s±licone, NS
N
±²50-00³²²0´7±1±.
•Tune anD loaD the raDio accorDµ
ing to TM
1µ-5²20¶520³10.
You ge´
only two minutes ±n TUN¶ to ³ake
f·nal adJust³ents. That builds up a
lot o¸ heat. Using ³ore than two
³inutes r·sks da³age to the rad±o.
¹f you can't ³ake ±´, let ´he set cool
off iº ST AN» BY for
5
³inutes
before go·ng bac¼ to TU½¾.
While operating, put ´he se´ ±n
ST AN» BY any ti³e you plan ´o
stop trans³it´ing for an hour or so.
If you'll ¿e off longer than thatÀ shut
MAy 86
4·
course.
If your AngryÁÂ
0±
±s ±nside a shel-
ter, here are a couple of other coolers
to try:
• Keep the shelter door ±nÃÄt cover
open to let air into the shelter. Keep
the shelter exhaust vents open to let
hot air out.
Keep
inlet
cover
opEn
• If your shelter has an air condi-
tioner, use i´. Close vents and inlets
of course. Make sure you open th
receiver valve on the un±t. That valve
lets coolant out oÅ the holding tank.
Turn the valve counterclockwise.
,¸¹
I
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