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51
12
CONNECTION AND INSTALLATION
12
Ground connection
The transceiver and antenna tuner MUST have an
adequate RF ground connection. Otherwise, the over-
all efciency of the transceiver and antenna tuner in-
stallation 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
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
Ships 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 pipe Metal object Copper screen
IC-M801E_0.qxd 05.12.2 16:32 Page 51
59


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