Icom IC-F8101 Instruction Manual - Page 76

■ Ground connection, WARNING, Best ground points, Unusable ground points

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6 CONNECTION AND INSTALLATION ■ Ground connection The transceiver and antenna tuner MUST have an adequate RF ground connection. Otherwise, the overall efficiency of the transceiver and antenna tuner installation will be reduced. Electrolysis, electrical shocks and interference from other equipment could also occur. For best results, use a 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 the same ground point, otherwise the voltage difference (at the RF level) between two ground points may cause electrolysis. RWARNING! When grounding to a metal hull Use Zinc anodes to protect the hull from electrolysis. Ask your dealer, technical installer or refer to a technical book, and so on, for RF grounding details. • Ground system example Transceiver Best ground points • External ground plate • Copper screen • Copper foil Unusable ground points (These connections may cause an explosion or electrical shock) • Gas or electrical pipe • Fuel tank or oil-catch pan AT-140 Copper pipe Metal object Copper screen • About the ground strap connection for the AH-740 Ground strap Vehicle chassis or body 70

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6
CONNECTION AND INSTALLATION
■
Ground connection
The transceiver and antenna tuner MUST have an
adequate RF ground connection. Otherwise, the
overall efficiency of the transceiver and antenna
tuner installation will be reduced. Electrolysis, electri-
cal shocks and interference from other equipment
could also occur.
For best results, use a 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 the same ground point, otherwise the volt-
age difference (at the RF level) between two 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 dealer, technical installer or refer to a
technical book, and so on, for RF grounding de-
tails.
• Ground system example
Best ground points
• External ground plate
• Copper screen
• Copper foil
Unusable 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
AT-140
Transceiver
• About the ground strap connection for the AH-740
Ground
strap
Vehicle chassis or body