Ground Connection; Power Source - Icom IC-M802 Instruction Manual

■ Ground connection

The transceiver and antenna tuner MUST have an ad-
equate RF 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 50 or 75 mm (2 or 3 inches) wide
copper strap and make the connection as short as
possible. Ground the transceiver and antenna tuner
to one ground point, otherwise the voltage difference
(in RF level) between 2 ground points may cause
electrolysis.
R WARNING— When grounding to a metal hull
Use Zinc anodes to protect the hull from electroly-
sis.
Ask your technical dealer, installer or refer to a
technical book, etc., for RF grounding details.
CAUTION: NEVER connect the transceiver to a
"positive-grounded ship," otherwise the transceiver
will not function.
Ground system example

■ Power source

The transceiver requires a regulated DC power of
13.6 V and at least 30 A. There are 2 ways to supply
power:
• Direct connection to a 12 V battery in your ship
through the supplied DC power cable.
CATION: 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. When it is necessary to make a run of over
3 m, use a #6 or similar gauge wire with line fuses,
instead of the supplied DC power cable for a maxi-
mum of 6 m (20 ft.).
Copper pipe Metal object
CONNECTION AND INSTALLATION
Best ground points
• External ground plate
• Copper screen
• Copper foil
Acceptable ground point
• Stainless steel stanchion
• Through mast
• Through hull
• Metal water tank
Undesirable ground points
• Engine block
• Ship's DC battery ground
Un-usable ground points
( These connections may cause an explosion or electrical
shock.)
• Gas or electrical pipe
• Fuel tank or oil-catch pan
Copper screen
DC power cable connection
NOTE: Use terminals for the cable connection.
+ red
_ black
12 V
battery
Supplied
DC power cable
13
Crimp 13
Solder
57