DOCNUMBER 9500
Document Issue 1, Revision 7
June 2009 Page 6–7
Alpha Radio Products Alpha 9500 HF Linear Amplifier Operating Manual
Product Release 1 Operating the Amplifier
Step 8
Press the MEMORY/AUTO
button again to turn off autotune.
Step 9
(Optional) Verify the saved
settings by returning to each
frequency and confirming the
power output. Make any necessary
adjustments and save as before.
Step 10
If you get a gain fault (fault 1)
while following this procedure,
assist the autotune as follows:
1. Unkey the amplifier so that the
fault clears.
2. Decrease the power.
3. With the MEMORY/AUTO
button pressed, key the
amplifier and press the TUNE
(down) button twice to restart
the autotune.
4. Gradually increase the power.
NOTE:
•
The amplifier is tolerant of at least a 3:1 output mismatch at most
frequencies. If you do not save settings for any one of the
segment locations in User 1, the factory-set values are applied
to that location (the Alpha 50 ohm dummy load values that may
or may not be correct for your antenna and your station).
•
If you are using a different antenna for one of the bands (for
example, 80 m), the tuneup procedure is the same as above
except that you must choose the antenna port first before keying
the amplifier on that band. Press the correct ANTENNA
SELECT button for the antenna that you wish to use. You are
now ready to tune the amplifier up on 80 m. The amplifier stays
on that antenna port until a band change. If you wish to return to
the same settings, save the settings into memory.
Action Result
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