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7
CONNECTIONS AND INSTALLATION
I Ground connection
The transceiver, remote controller RC-21 and an-
tenna tuner MUST have an adequate ground connec-
tion. Otherwise, the overall efficiency of the
transceiver and antenna tuner installation will be re-
duced. 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, RC-21 and antenna tuner
to one ground point, otherwise voltage differences be-
tween 2 ground points may cause electrolysis.
u CAUTION: The IC-M710RT has either a negative
ground or floating ground depending on version.
NEVER connect the negative ground type to a
"plus-grounding ship," otherwise the transceiver will
not function.
Ground system example
RC-21
Copper pipe
I Power source
The transceiver requires regulated DC power of 13.6
V and at least 30 A. There are 3 ways to supply
power:
• Direct connection to a 12 V battery in your ship
through the supplied DC power cable.
• Use the PS-60
AC outlet.
• Use the PS-66
19–32 V DC power source.
u CAUTION: The supplied DC power cable MUST be
used to provide power to the transceiver. AVOID ex-
ceeding the 3 m (10 ft) length of the DC power
cable. If it is necessary to make a run of over 3 m,
use #6 or similar weight cable instead of the sup-
plied DC power cable for a maximum run of 6 m (20
ft).
22
Metal object
to connect to an
DC POWER SUPPLY
-
to connect to a
DC
DC CONVERTER
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 or oil-catch pan
Transceiver
yyyyyy
yyyyyy
yyyyyy
yyyyyy
Copper screen
DC power cable connection
black
12 V
battery
Optional AT-130/E
✍
NOTE: Use
terminals
for the cable connection.
red
Solder
Supplied
DC power cable
Crimp
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