Specifications

8
DOCNUMBER 9500
Document Issue 1, Revision 7
June 2009 Page 8–3
Alpha Radio Products Alpha 9500 HF Linear Amplifier Operating Manual
Product Release 1 Maintaining and Upgrading the Amplifier
When you first install the amplifier, you must save the tune and load
settings for your setup and antennas to the User 1 memory. Note that, for
each band, there are five segment values, representing five different
frequencies across that band. The tune and load settings that are saved in
each location provide a good starting place for the autotune algorithm to
begin. You may choose any favorite frequencies to use as the saved value
for each segment as long as they increase monotonically from segment 1
to segment 5. For a list of frequencies for each segment and band in the
factory default memories, see
Table 6-2, page 6–9.
To save settings for each segment and band setting in the User 1 and User
2 memories:
2a Engage autotuning by pressing the MEMORY/AUTO button.
2b Choose the correct antenna on the amplifier.
2c Set a steady carrier and apply drive.
2d With the MEMORY/AUTO button still pressed, increase the drive
until the amplifier achieves 1500 W output.
2e Choose User 1 and the appropriate segment button, and press the
SAVE button. The light flashes once to indicate that the values have
been saved to memory.
2f Repeat across all bands and segments.
8.3 Replace the Tube and Fuses
Step 1 Power down the amplifier.
Step 2 Disconnect the AC line cord from the power source and lift the cover.
WARNING
!
WARNING! Disconnect the AC line cord from the power source
before lifting the cover for any reason.