I have the 50 MHz problem and have a KAT3. I haven't done enough testing but
I suspect that the problem with the relay opening may be in the KAT3.
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From:
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[mailto:
[hidden email]] On Behalf Of Phil & Debbie Salas
Sent: Tuesday, May 27, 2008 8:36 AM
To:
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Subject: [Elecraft] 50MHz TX Problem
Has anyone had this problem who doesn't have a KAT3 installed? I don't mean
a KAT3 bypassed, but no KAT3 at all. The reason I'm asking is that there
have been a few folks (myself included) who would suddenly experience a
sudden high SWR, and after that would wind up with a residual SWR on some
bands even with the KAT3 bypassed. This sudden high SWR occurance happened
to me on 20 and 30 meter CW. I could go back and retune the KAT3, but the
antenna SWR had not changed (according to my in-line PowerMaster), and then
I had residual SWR on 17-10 meters that was high enough that I couldn't
properly set up my cal'd 5W/50W power on those bands. The only soution was
to replace the KAT3. And since having my new KAT3, I experienced this once
(again operating CW on 20 meters), but the residual SWR cleared and I
haven't had the problem recently. I wonder if there is something lurking in
the KAT3?
So I thought it would be interesting to find out if only the folks having
the 6-meter problem have a KAT3.
Phil - AD5X
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