[Elecraft] [K3] KAT3 not functioning on 6m

[Bill Coleman]

Update on this - this problem with the KAT3 ATU not working on 6m appears to be intermittent. Sometimes it will tune, sometimes it won’t. Weird.


> On May 17, 2020, at 6:38 PM, Bill Coleman <aa4lr at arrl.net> wrote:
> 
> I upgraded my K3 to include the new KSYN3A back in November. (I have the KRX3, so I installed two of them)
> 
> Ever since then, it seems like the Antenna Tuner isn’t doing it’s thing on 6m. It works fine on the other bands.
> 
> The K3 doesn’t really show any other problems.
> 
> Here’s the symptoms:
> 
> - ATU not in bypass
> - ANT1 or ANT2 - doesn’t matter.
> - Press ATU Tune
> - Unit makes noises like it is working on a match, but the entire time, the display only shows “- -“ in the right hand side of the display — at no time does it show an SWR.
> - Eventually, unit gives up trying to find a match
> 
> What’s odd is this:
> 
> - Press Tune, unit outputs power, but no SWR is displayed in the right hand side of the display, only “- -“.
> 
> - However, if I transmit, I do see an SWR indication in the meter face, and the SWR seems accurate, depending on the antenna I choose. 
> 
> I’m running firmware revision 5.67/2.88 — which is the latest, I believe.
> 
> Any ideas?
> 
> Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
> Web: http://boringhamradiopart.blogspot.com
> Quote: "Not within a thousand years will man ever fly!"
>            -- Wilbur Wright, 1901
> 
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Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Web: http://boringhamradiopart.blogspot.com
Quote: "Not within a thousand years will man ever fly!"
            -- Wilbur Wright, 1901