Fw: [Elecraft] K3 antenna tiner related question

[Ken Kopp]

John,

Yes, it does happen in ATU bypass mode.  I wonder if there's
some relationship to the RX input overload circuit?  There are 
no other antennas connected to the radio.  Perhaps there's
some relationship to the unshielded wires going to the two coax
connectors that are currently being discussed ... I converted the
jacks to BNC's when the kit was built and the next time I have
it open I plan to replace the two unshielded leads with RG-174. 
Unfortunately, I can't say if this is a "new" condition, as I can't
hear the relay clicking in my "mornal" operating posture.  It may 
well have been with me since the first turn-on. (:-)

Ken
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Does it happen in the bypass mode?

I wonder if there may be a little SWR left after the tune cycle, and 
when you key, the ATU tries to take it out.

John
k7up


At 08:51 PM 16/07/08, you wrote:

>A relay in the area of the antenna tuner in my K3 (S/N 56)
>is clicking randomly on several bands as I send CW.  It
>does -not- follow the CW keying and seems to be totally
>random in nature.  The "click rate" isn't related to keying
>speed, either.  T/R change-over delay isn't involved. I've
>had no reports of keying anomalies when on the air, and
>it sounds normal in my K2's receiver.  There is only one antenna 
>cable connected to the radio, to "ANT 1"
>
>Does anyone else observe this?  It's quiet ... the only way
>I became aware of it was when I accidently bumped the key
>while I was leaning over the radio doing something behind it.
>
>73! Ken Kopp - K0PP
>     ElecraftCovers at rfwave.net