Ground Connection; Power Source - Icom IC-M710 Instruction Manual

7
CONNECTIONS AND INSTALLATION

■ Ground connection

The transceiver and antenna tuner MUST have an
adequate ground connection. Otherwise, the overall
efficiency of the transceiver and antenna tuner instal-
lation will be reduced. Electrolysis, electrical shocks
and interference from other equipment could also
occur.
For best results, use the heaviest gauge wire or strap
available and make the connection as short as possi-
ble. Ground the transceiver and antenna tuner to one
ground point, otherwise voltage differences between
2 ground points may cause electrolysis.
CAUTION: The IC-M710 has a negative ground.
NEVER connect the IC-M710 to a "positive ground
ship," otherwise the transceiver will not function.
Ground system example
Transceiver
Copper pipe

■ Power source

The transceiver requires regulated DC power of
13.6 V and at least 30 A. There are 3 ways to sup-
ply power:
• A direct connection to a 12 V battery in your ship,
through the supplied DC power cable.
CAUTION: The supplied DC power cable MUST
be used to provide power to the transceiver.
AVOID exceeding the 3 m (10 ft) length of the DC
power cable. If it is necessary to make a run of
over 3 m (10 ft), use a #6 or similar gauge wire in-
stead of the supplied DC power cable, for a maxi-
mum run of 6 m (20 ft).
19
Metal object Copper screen
Good ground points
• Ship's ground terminal
• External ground plate
• External copper screen
Acceptable ground points
• Stainless steel tuna tower
• Stainless steel stanchion
• Through mast
• Through hull
• Metal water tank
Undesirable ground points
(these points may cause electrolysis)
• Engine block
• Keel bolt
Unusable ground points
( these connections may cause an explosion or elec-
trical shock)
• Gas or electrical pipe
• Fuel tank
• Oil-catch pan
Optional AT-130
DC power cable connection
black
12 V
battery
Supplied
DC power cable
NOTE: Use terminals for
the cable connection.
Crimp
red
or
Solder