[Elecraft] K3/KPA500/KAT500 SWR problem

[ab2tc]

Hi,

Are you in AUTO mode when this is happening? I found it wise to switch to
manual mode when finishing the quick tune after a QSY. Before I got into
that habit this was happening a number of times. I am running barefoot with
no internal tuner in the K3 so those are not a factor. The MFJ tuner I was
using before I got the KAT500 also had this problem so it's not unique to
the KAT500. For the MFJ I ran a wire out to the remotely located tuner
connected to the TUNE button so I could run it in manual (really
semiautomatic) mode.

AB2TC - Knut


Bill W2BLC wrote
> There is a lot of mention regarding common mode chokes, RF grounding, 
> copper to aluminum connections, etc. Speaking only of my station, I 
> experienced no similar automatic tuner problems with equipment other 
> than the KAT500. I suspect other ops have similar experiences.
> 
> My typical experience using the tuner is QSY - a two second TUNE - and 
> the KAT knows where and what to do. Everything is just fine - until in 
> the middle of the QSO the tuner goes berserk and does a retune (a little 
> noisy). If I talk through it - all will go back to normal in a few 
> seconds. Disconcerting to say the least.
> 
> I do not know if this problem is damaging to the KAP500 and/or the 
> KPA500. Hence, I am back to running 100 Watts until this is corrected - 
> changing some coax connections and using the K3's internal tuner.  Thus 
> removing the devices from the lineup.
> 
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