PS Magazine - TB 43-PS-558
PS, The Preventative Maintenance Monthly
ISSUE 558
MAY 1999
PS 558
52
SINCGARS . . .
J1 connector. If the circuitry gets dam-
aged, no power gets through to the
loudspeaker.
Some Old Stuff
If you’re just now replacing the AN/
VRC-12-series radio in your HMMWV
with a SINCGARS radio, remember to
replace the RF cable, too.
You need to replace the AN/VRC-
12-series’ CG-1773 RF cable with the
SINCGARS CG-3855 RF cable.
The CG-3855 is double-shielded to
protect your digital and voice trans-
mission from electromagnetic interfer-
ence (EMI). The CG-1773 is not
double-shielded.
EMI can create noise during voice
transmission and cause loss of data dur-
ing digital transmission.
Depending on your SINCGARS con-
figuration, you need one 21-ft CG-3855
cable, NSN 5995-01-225-1660, or two
18-ft CG-3855 cables, NSN 5995-01-
219-7035. To get the whole story, see
TB 11-5820-890-20-90, Installation
Instructions for Installation Kit, Elec-
tronic Equipment, MK-2328/VRC.
The CG-3855 cables are included in
the installation kit, or you can order
them separately.
You need to take extra care when
making connections with the RF cables
and connectors. They’re not as rugged
as other cables and connectors on the
radio, so they’re more prone to dam-
age from a sloppy hookup.
The secret to making a successful
connection is playing it straight. Line
up the RF cable keyway with the con-
nector key. Push the cable straight in.
Turn the connector to the right. To un-
hook the cable, push the connector in
a little, turn it to the left and pull
straight out.
If you push or pull the cable at even
a slight angle, you risk breaking the
center pin. You’ll have to replace the
cable. If the pin lodges in the recep-
tacle, support will have to replace the
connectors on the RT or the power am-
plifier. On some older models, they
may have to replace an entire front
panel or subassembly.
it's
been lovely
chatting
about
pm
.
well,
i've got to
check on an
o-ring
.
i'm a
wizard
. a
math wizard
to be exact.
with my
gigantic brain
i am
able to do
mathematical
computations
that mere
mortals can't do.
you
laugh
? here's
one you mortals
can't seem
to do
.
An AN/PRC-119 SINCGARS BA-
5590 battery costs $71. Use it 24 hours
and it’s dead.
For the cost of about 15 BA-5590
batteries, you can get a rechargeable
BB-390A battery with a PP-8444A
charger and a AP-390A adapter. A BB-
390A can be recharged over 200 times.
If you use the BB-390A, every
charge after the first 15 saves $71.
Even though there’s some cost to re-
charging, before the BB-390A dies
your unit will have saved several thou-
sand dollars for each SINCGARS!
Order the BB-390A battery with
NSN 6140-01-419-8187; the PP-8444A
charger with NSN 6130-01-443-0970;
and the AP-390A adapter with NSN
There is also an adapter, AP-HUM-
MER, NSN 5940-01-427-9395, that
lets you charge the battery with your
vehicle.
Visit the battery web site at:
www.monmouth.army.mil/cecom/lrc
Click on
Battery Support.
but
you don't need
my gigantic brain
to figure this out.
this one is a no
brainer!
PS 558
53
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