D Connecting The Remote Control Cable; Ground Connection - Icom IC-M804 Instruction Manual

D Connecting the remote control cable

1. Insert the remote control cable's connector into
the main unit jack on the remote controller's back
panel.
2. Rotate the connector clockwise until it is
completely tightened.
CAUTION: BE SURE that the control cable's
connector is completely screwed to the remote
controller's back panel. Otherwise, the remote
controller may lose its waterproof protection.

■ Ground connection

The transceiver and antenna tuner must have
a proper RF ground connection. Otherwise, the
efficiency of the transceiver and antenna tuner may
be reduced. Also, electrolysis, electrical shocks, and
interference with other equipment may occur.
For the best results, use a 50 or 75 mm wide copper
strap, and connect as short as possible. Ground the
transceiver and antenna tuner to one ground point.
Otherwise, the voltage difference (at the RF level)
between the 2 ground points may cause electrolysis.
R WARNING! When grounding to a metal hull, use
Zinc anodes to protect the hull from electrolysis. Ask
your dealer or installer for RF grounding details.
CAUTION:
• DO NOT connect the transceiver to a "positive-
grounded vessel." Otherwise, the transceiver will
not function.
• Any external units, such as a PC, must be
properly grounded. We suggest using a wide
copper strap.
Ground system example
Copper pipe Metal object
CONNECTIONS AND INSTALLATION
Best ground points and materials
• External ground plate
• Copper screen
• Copper foil
Acceptable ground points
• Stainless steel stanchion
• Through mast
• Through hull
• Metal water tank
Undesirable ground points
• Engine block
• Vessel's DC battery ground
Unusable ground points
(These connections may cause an explosion or
electrical shock)
• Gas or electrical pipe
• Fuel tank or oil catch pan
Wide Copper strap
GND
Copper screen
8
Remote controller
cable's connector
8
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