D Synchronization With The Exciter; Alc Adjustment - Icom IC-PW2 Instruction Manual

3
INITIAL SETUP
Connection mode

D Synchronization with the exciter

After the CI-V setting, confirm that the operating
frequency is synchronized with the exciter.
L When "Connect an Exciter to INPUT1 & 2" is selected in
the "Exciter Connection" setting, the screen of step 3 is
automatically displayed.
1. Touch the frequency band button
(Example: 1.8 MHz).
• The BAND window is displayed.
2. Touch "AUTO."
• The BAND window is closed.
3. Confirm that "AUTO" and the exciter's operating
frequency are displayed under the button.
Exciter's operating frequency
L When only "AUTO" is displayed, or the operating
frequency is not synchronized, turn OFF the exciter
and the amplifier and then turn them ON again, or
check the settings of each device.
NOTE: When an operating frequency over 65 MHz
is selected on the exciter, the amplifier does not
synchronize the frequency.

ALC adjustment

To use the linear amplifier circuit of the IC-PW2,
adjusting the gain correction and the ALC operating
range for the exciter by the following steps is
necessary.
L After adjusting at 1 operating frequency, there is no need
to readjust for each frequency band.
NOTE:
• Check periodically as the adjustment level may shift due
to the surrounding environment (install a new antenna,
replace the exciter, temperature, and so on) or aging.
• When the linear amplifier is connected to a 180 ~ 264
V AC power source, both 1 kW and 500 W require
adjustment.
• When using a dummy load (pseudo load: 50Ω), connect
one with a sufficient margin for the maximum input
power.
Confirming the antenna SWR
Confirm that the SWR of the antenna (impedance:
50Ω) to be used is less than 1.5:1 at the transmitting
frequency for the ALC adjustment.
1. Push to select the antenna you want to
ANT
use.
L When 2 exciters are connected, push
change the desired RF input connector to
(Lights orange: TX/RX side).
2. Push
AMP
linear amplifier circuit and the internal antenna
tuner.
L When the circuit or the tuner are OFF, each indicator
on the key is OFF.
3. Touch the right side meter to display the SWR
meter.
4. Select the same frequency band as the exciter,
and then transmit from the exciter.
• Confirm that the amplifier is transmitting.
5. Check the SWR meter indicates less than 1.5:1.
L If the SWR is more than 1.5:1, adjust the antenna
matching.
6. Stop the transmission.
3-3
INPUT
and to turn OFF the
TUNER
to