Specifications

Alpha 9500 HF Linear Amplifier Operating Manual Alpha Radio Products
Operating the Amplifier Product Release 1
DOCNUMBER 9500
Document Issue 1, Revision 7
Page 6–6 June 2009
66
6
Remember
REMEMBER If you need to retune, key the amplifier and press the MEMORY/AUTO
button once.
If the amplifier does not retune, with the amplifier keyed, press the TUNE
(down) button once or twice, which forces the amplifier to recheck the
gain and retune.
Procedure 6-2 Tuning the amplifier
Action Result
Step 1
Set the transceiver to the desired
band/segment frequency. For a list
of frequencies, see
Table 6-2,
page 6–9.
Step 2
Set the antenna port to the correct
antenna.
Step 3
Press the MEMORY/AUTO
button to turn on autotune.
Step 4
Apply ~10 W to the amplifier and
wait for the amplifier to finish
autotuning.
The amplifier jumps to the
specified band and autotunes.
Step 5
With the amplifier keyed, slowly
advance the transceiver power.
This is called “walking the amp
up.”
As you increase the power, the
amplifier continues to tune.
Step 6
When you reach the desired output
power level, unkey the amplifier
and press the SAVE button once.
The Save LED blinks on and off
once. The tuning and antenna port
settings are now associated with
the indicated band/segment.
From now on, each time you are in
the User 1 (or User 2) memory, key
the amplifier, and apply RF in that
range of frequencies, the amplifier
jumps to these saved settings.
Step 7
Repeat the previous steps for all
segments and bands.