I would suspect water in the feed line or a bad connector first. You'll know more when you can inspect the antenna.
You could try overriding the tuning power (in the manual) and see if it can even tune at full power instead of the normal 20 watts. I suspect it would have an issue that the lower power doesn't reveal.
73, Byron N6NUL
K2 7077
K1 2799
> On Dec 3, 2014, at 19:08, John Wiener <
[hidden email]> wrote:
>
> Hi
> This just started tonight.The ATU is acting squirreled
> I think it is the KAT100
> no change in setup…K2/100 to KAT100 to G5RV
> FLdigi and Mac OS (not yet upgraded to Yosemite)
> Signalink USB
>
> no changes in connections
>
> so…I use the ATU on 80M it goes to 1:1 after several relay clicks as usual
> Then I xmit….Hi Current…red 5:1 SWR and variable
> I turn off xmit on fldigi…now rcvr is low output…I hit the TUNE button and it re tunes the atu back to 1:1 and normal rcvr volume
>
> I’ll check on my antenna tomorrow when it is light but
>
> Does this sound like the ATU is going bad?
>
> serial number is 5312
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