Tom Hammond wrote:
For what it may be worth, if you have an older KPA100 (not sure what
'vintage' actually qualified it as 'older' though, mine's as old as the
come... an FT unit from before they hit the streets), but there is a mod
(available from me, and I think somewhere on the Elecraft web site) to
help eliminate, or at lease significantly reduce spurs from the KPA100
HV oscillator. Once a couple components. I have the illustrations for
the mod, but NOT spare parts.
Hi Tom (and others),
I also have this birdie. Mine is especially strong on 18.068 or so. I drove
Jack Brindle nuts by claiming it was generated by the KRC2...actually, it is
being RADIATED by the serial cable which in my case goes to the KRC2 and my
computer. But it definitely goes away when I turn off the KPA100.
I have installed the recent Elecraft KPA100 mod that delays the SWR power
rollback to 2:1, and also includes a new 18.432 MHz crystal to replace the 16
MHz one. I thought this was done to reduce birdies, but apparently it doesn't
reduce these.
Tom, I would be interested in your mod to reduce KPA birdies.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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