Grounding; Antenna - Icom IC-PW1 Instruction Manual

Grounding

To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other prob-
lems, ground the linear amplifier 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.
R WARNING: NEVER
GROUND terminal to a gas or electric pipe, since
the connection could cause an explosion or electric
shock.

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
with more than 2 kW power rating, and feedline. 1.5:1
of Voltage Standing Wave Ratio (VSWR) is recom-
mended for a desired band. Of course, the transmis-
sion line should be a coaxial cable.
When using 1 antenna, use the [ANT1] connector.
CAUTION:
Protect your linear amplifier from light-
ning by using a lightning arrestor.
PL-259 CONNECTOR INSTALLATION
Coupling ring
9
30 mm ⁄ in 10 mm
8
connect the
antenna
30 mm
10 mm (soft solder)
10 mm
Soft
solder
1–2 mm
Solder Solder
3 1
⁄ in 1–2 mm ⁄ in
8 16
INSTALLATION AND CONNECTIONS
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 lin-
ear amplifier's power drops to protect the final FET.
In this case, an antenna tuner is useful to match the
linear amplifier and antenna. Low SWR allows full
power for transmitting even when using the antenna
tuner. The IC-PW1 has an SWR meter to monitor the
antenna SWR continuously.
q Slide the coupling ring down. Strip the cable jacket
and soft solder.
w Strip the cable as shown at left. Soft solder the
center conductor.
e Slide the connector body on and solder it.
r Screw the coupling ring onto the connector body.
2
6