PS Magazine - TB 43-PS-568
PS, The Preventative Maintenance Monthly
ISSUE 568
MARCH 2000
he AN/PRC-112 has been plagued by
three pesky problems that a free upgrade
now solves.
First, the large VOL/OFF knob was often
accidentally turned on and left on. That
drained the battery.
The upgrade replaces the current knob
with a smaller one that will be harder to
accidentally turn on.
Second, water had a nasty habit of slipping
past the seal and into the radio.
A new, better gasket replaces the old one
and stops this water intrusion.
Third, a more efficient transponder
module will be installed that will solve the
problem of chance frequency hopping.
In addition to solving these problems, the upgrade also refinishes the radio’s
case to provide better seating of the new gasket.
Upgrades are already in progress. Check your radio to see if it has been
upgraded, yet. Look at the data plate. If the NSN is 5820-01-458-6018, relax. It’s
been upgraded.
If the NSN is 5820-01-279-5450 and a Tobyhanna Army Depot (TYAD)
sticker has been added, it’s been upgraded, too.
If not, then you need the upgrade.
Contact CECOM at DSN 992-1191 or (732) 532-1191. Or e-mail them at:
jetterb@mail1.monmouth.army.mil
They’ll give you instructions on how to get the process rolling.
PS 568
52
PS 568
53
MAR 00
AN/PRC-112 Radio . . .
PP-8481/U
The PP-8481/U mounts in tactical
vehicles and can charge while the en-
gine is running or while it’s off. The
COTM charges two batteries at a time
and holds another two ready for charg-
ing. When the first two batteries are
fully charged, it automatically switches
to charge the second pair.
The COTM can charge four BB-390s
in about 4 hours.
Charger Field Requirements
How many chargers your unit needs to take to the field depends on several
factors:
How long a rechargeable battery
will last in a piece of equipment.
For
instance, a BB-390A/U used
in your SINCGARS should last
between 8 and 18 hours. You
need to determine, by your unit’s
use, where in that range your
batteries fall.
How many battery-powered
pieces of equipment you have.
The amount of daily charging time
available to your unit.
Where the battery chargers are
located.
That will help determine the number
of backup batteries you will need on hand.
CECOM can help you determine your charger needs. Call or e-mail them at:
DSN 992-4948 or (732) 532-4948
brockeld@mail1.monmouth.army.mil
And check out their website at:
http://www.monmouth.army.mil/cecom/lrc/ lrchq/power/rechargebat.html
Remember, the days of using non-rechargeable batteries for commo equip-
ment used in training and garrison duties are gone since DA memo DALO-SMR,
29 Aug 97, was issued. Need a copy? Call the Army’s Combined Arms Support
Command (CASCOM) at DSN 687-0040 or (804) 734-0040. Or pull it off the
above website.
THAT
SOUNDS
GOOD.
HM-MMM,
MAYBE
CECOM
CAN
HELP ME FIGURE
THIS OUT.
Charger-on-the-move (COTM),
PP-8481/U, NSN 6130-01-467-9465
this just
in.
..free
upgrades
being given
to AN/PRC-112
radios!
➥
➥
➥
➥
Upgrade
includes
smaller
ON/OFF
switch
Check data plate for upgrade NSN
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