Installation And Connections - Icom IC-756 Instruction Manual

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E Unpacking
After unpacking, immediately report any damage to the
delivering carrier or dealer. Keep the shipping cartons.
For a description and a diagram of accessory equip-
ment included with the IC-756, see UNPACKING on
p. ii of this manual.
E Selecting a location
Select a location for the transceiver that allows ade-
quate air circulation, free from extreme heat, cold, or
vibrations, and away from TV sets, TV antenna ele-
ments, radios and other electro-magnetic sources.
OPERATING ANGLE ADJUSTMENT
The rubber feet on the
bottom of the trans-
ceiver provide two op-
erating angles.
E 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 be-
tween the GROUND terminal and ground as short as
possible.
(on M)
M O A oo oo
0 099%% 00
°
INSTALLATION AND CONNECTIONS
E Antenna
For radio communications, the antenna is of critical im-
portance, along with output power and sensitivity. Se-
lect antenna(s), such as a well-matched 50 Q antenna,
and feedline. 1.5:1 of Voltage Standing Wave Ratio
(VSWR) is recommended for a desired band. Of
course, the transmission line should be a coaxial
cable.
When using 1 antenna, use the [ANT 1] connector.
Y CAUTION: Protect your transceiver from lightning
% by using a lightning arrestor.
PL-259 CONNECTOR INSTALLATION
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Coupling ring 10 mm (soft solder)
10mm soft Strip the cable as
solder shown at left. Soft
Sates solder the center con-
1-2 mm ductor.
solder solder
Slide the connector
body on and solder it.
Screw the coupling
ring onto the
connector body.
30mm=%in 10mm=%in 1-2 mm = %e in
Antenna SWR
Each antenna is tuned for a specified frequency
range and SWR may be increased out-of-range.
When the SWR is higher than approx. 2.0:1, the
transceiver's power drops to protect the final transis-
tor. In this case, an antenna tuner is useful to match
the transceiver and antenna. Low SWR allows full
power for transmitting even when using the antenna
tuner. The IC-756 has an SWR meter to monitor the
antenna SWR continuously.