DOCNUMBER 9500
Document Issue 1, Revision 7
June 2009 Page 6–9
Alpha Radio Products Alpha 9500 HF Linear Amplifier Operating Manual
Product Release 1 Operating the Amplifier
6.5 Program the Amplifier Memory
The ALPHA 9500 has 5 memory settings per band per user (default, User
1, and User 2). Each memory setting holds 3 values: frequency, tune, and
load.
These capacitor settings are made at t
he factory by tuning into a 50-ohm
load, saving the settings, and migrating them to the appropriate memory
bank. The amplifier is thus set up at the factory so that the memory-bank
tune and load settings across all bands and band segments are appropriate
for 1500-W output into a 50-ohm load on antenna port 4 for User 1 and
User 2.
Antenna port 4 is the default output port for all memories on initialization.
We reco
mmend that you choose antenna port 4 for your primary antenna
on User 1. If no antenna is connected or the wrong port is selected, you
get an SWR fault (Fault 12).
The default memory settings are the only ones that cannot be changed
(except a
t the factory). They are listed in Table 6-2.
Table 6-2
Factory-set memory settings by band and segment
Band Seg 1 Seg 2 Seg 3 Seg 4 Seg 5
28 28.20 28.60 29.00 29.40 29.80
24 24.55 24.65 24.75 24.85 24.95
21 21.05 21.15 21.25 21.35 21.45
18 18.05 18.15 18.25 18.35 18.45
14 14.05 14.15 14.25 14.35 14.45
10 10.05 10.15 10.25 10.35 10.45
7 7.05 7.15 7.25 7.35 7.45
3.5 3.55 3.65 3.75 3.85 3.95
1.8 1.82 1.84 1.90 1.94 1.98
You are expected to optimize the capacitor settings stored in User 1 and
User 2 memories during installation.
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