What are the symptoms of an 'event'?
On 18 Dec 2014 16:49, Bill and Liz wrote:
I recently tracked down the ham who had done work on my AL-82 as well
as a second one purchased at the same time by another fellow who was
forced by health out of ham radio. I learned that right from the get
go both amps had parasitic problems and hardly a day would go by
without one or the other having an “event” (hence the original owner
had two of them!). These amps date from the 90s-perhaps they were of
the initial design before changes started being made.
The Measures parasitic retro kits were installed in both amps and the
problems immediately disappeared. Both amps today have the same
minor problem on 10M: extreme heating, discolouration and distortion
of the 100 ohm paralleled resistors in the suppressors but no
parasitic events.
From this information it would appear that I would not be wise to
re-install the original suppressors, and, since I seldom run the amp
over 400W on 10M anyhow, that I should “let sleeping dogs lie” as it
were.
Thanks to all who came forward with ideas and advice.
Bill VE3NH _______________________________________________ Amps
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73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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