RF Concepts LLC PA-77DF User Manual
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5
DOCNUMBER 9500
Document Issue 1.1
February 2010
February 2010
Page 5–9
RF Concepts, LLC
Alpha 9500 Linear Amplifier User Manual
Product Release 1
Operating the Amplifier
Step 3
Set the transceiver to the desired band/segment frequency.
Step 4
Select User 1 or User 2 mode (so that you can save the settings).
Step 5
Press the MEMORY/AUTO button to turn on autotune.
Step 6
Key the transceiver by applying input power of 10–20 W.
The amplifier selects the specified band and autotunes.
Step 7
With the amplifier keyed, slowly advance the transceiver power.
As you increase the power, the amplifier continues to tune.
Step 8
(For initial amplifier setup) When you reach the desired output power
level, unkey the amplifier and press the SAVE button once.
level, unkey the amplifier and press the SAVE button once.
The Save LED blinks on and off once. The tuning settings are now
associated with the indicated band/segment. From now on, each time you
are in User 1/User 2 memory, when you key the amplifier and apply RF
in that range of frequencies, the amplifier autoselects these saved settings.
associated with the indicated band/segment. From now on, each time you
are in User 1/User 2 memory, when you key the amplifier and apply RF
in that range of frequencies, the amplifier autoselects these saved settings.
Step 9
Repeat the previous steps for all band segments.
Step 10
Press the MEMORY/AUTO button again to turn off autotune.
Step 11
(Optional) Verify the saved settings by returning to each frequency and
confirming the power output. Make any necessary adjustments and save
as before.
confirming the power output. Make any necessary adjustments and save
as before.
Step 12
NOTE
After you set up your amplifier with reasonable tune and load settings,
do not press the MEMORY/AUTO button. Small changes in
frequency and antenna performance are handled easily within the
amplifier tuning range.
do not press the MEMORY/AUTO button. Small changes in
frequency and antenna performance are handled easily within the
amplifier tuning range.
Manual tuning
Use manual tuning as necessary to optimize amplifier performance.
Procedure 5-4 Manually tune the amplifier
Step 1
.
Step 2
Select a band segment either with autoselect or manually.
Step 3
If necessary, select an antenna port.
If you operate on other than the default antenna port (port 4), you must
manually select the port. The port that was last used is saved.
manually select the port. The port that was last used is saved.
Step 4
Key the amplifier by applying input power of 10–20 W.