Table of Contents
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A. Battery Connections
Connect the power cable directly to the battery terminals.
Use of the cigarette lighter socket can lead to poor connec-
tion, and result in poor performance. Pay close attention to
the polarity of the cables when connecting them to the bat-
tery.
Make sure the positive (+) and negative (—) lead polarity is correct
when connecting to the battery.
Engine compartment «—-1—-
Passenger compartment
Red
Fuse
To the
transceiver
Chassis or
fire wall
@
if the
wiring
hole
in the fire wall
or chassis
is too
small,
disassemble the fuse holder to thread the wire through the hole.
Set
=
a
Thread like this
compartment
B. Ignition Noise
This transceiver has been designed to suppress
ignition
noise; however,
if excessive noise is present, it may be
necessary to use suppressor spark plugs (with resistors).
3-2-2.
Fixed Station
A regulated DC power supply (13.8 VDC capable of sup-
plying at least 10 Amperes) is required. The PS-430 and
the PS-50 are recommended.
CAUTION:
1.
2.
Never connect the AC power cable to the AC outlet until
all other connections have been made.
Before connecting and disconnecting the power connec-
tor, be sure to turn off the POWER switches of both the
transceiver and the DC power supply.
. Observe polarity of the DC power cable. The transceiver
operates on 13.8 VDC, negative ground. Battery polari-
ty must be correct. The power cable is color coded:
Red
—
+ (Positive polarity)
Black —
— (Negative polarity)
f° To 144 MHz antenna
v
TM-621A
: To 220 MHz antenna
TM-721A/721E
: To 430/440 MHz antenna
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