Installation And Connections; Unpacking; Selecting A Location; Grounding - Icom IC-78 Instruction Manual

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INSTALLATION AND CONNECTIONS

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Unpacking

After unpacking, immediately report any damage to
the delivering carrier or dealer. Keep the shipping car-
tons.
For a description and a illustration of accessory equip-
ment included with the IC-78, see 'Supplied accesso-
ries' on page i of this manual.
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Selecting a location

Select a location for the transceiver that allows ade-
quate air circulation, free from extreme heat, cold, or
vibration, and away from TV sets, and other electro-
magnetic sources.
The base of the transceiver has an adjustable stand
for desktop use. Set the stand to one of two angles de-
pending on your operating conditions.
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Grounding

To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other prob-
lems, ground the transceiver through the GROUND
terminal on the rear panel.
For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance
between the [GND] terminal and the rod as short as
possible.
R WARNING: NEVER
terminal to a gas or electric pipe, since the connec-
tion could cause an explosion or electric shock.
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For radio communications, the antenna is of critical im-
portance, along with output power and sensitivity. Select
antenna(s), such as a well-matched 50 Ω antenna, and feed
line. 1.5:1 or better of Voltage Standing Wave Ratio (VSWR)
is recommended for your desired band. The transmission
line should be a coaxial cable.
Antenna SWR
Each antenna is tuned for a specified frequency
range and SWR may be increased out of that range.
When the SWR is higher than approximately 2.0:1,
the transceiver's power drops to protect the final
transistor. In this case, an antenna tuner is useful
to match the transceiver and antenna. Low SWR
allows near full power for transmitting even when
using the antenna tuner. The IC-78 has an SWR
meter to continuously monitor the antenna SWR.
connect the [GND]

Antenna connection

CAUTION:
Help protect your transceiver from
lightning by using a lightning arrestor or better, dis-
connect the antenna during lightning storms.