W3FPR - Don Wilhelm wrote:
Comparing the K2 to any other rig outfitted with after-market filters is not
really a fair comparison. It does make me wonder how the K2 would do with
similar after-market filters -- alas, those filters do not seem to exist.
With almost 5000 K2s out there now, I wonder if InRad is having second
thoughts about providing filters for the K2 - it may require a non-SSB K2 to
fit them in physically, and with the small market created by that simple
fact, they may still not be interested.
Actually, INRAD did make a prototype K2 CW filter -- 400 Hz with great shape
factor. I have one. I first used a partial SSB board so that it could be
switched in and out, but I could not get an acceptably low degree of blowby.
Then I removed the SSB board and just hardwired the filter to the headers where
the SSB board would go...still poor. I tried lots of things with shielding and
grounding but never succeeded in getting results as good as the standard CW
filters with the KI6WX mod.
Just to be clear, this was NOT a problem with the filter, which looked great
when tested stand-alone. It had to do with interfacing it with the K2.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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