[Elecraft] KAT500 autotuner odd operation

[Dave (NK7Z)]

Hi Dave,

It's probably time to call Elecraft and seek advice...


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

It was one thing to have guessed it, another to have had that guess 
confirmed beyond possibility of refutation.
Arthur C. Clarke

On 7/14/25 21:18, dave ingebright via Elecraft wrote:
> I have a KAT 500 Autotuner and its been acting oddly for the last few weeks. I am using it connected to three antennas and it will not tune the antenna in the #3 socket. During troubleshooting, I have hooked it to a dummy load, with new coax and it says high SWR. Tuning on the other antennas seems to be suboptimal. It has intermittant high SWR on the other antenna outputs but now #3 seems to always show high SWR. Has anyone seen this or has any ideas? I am running it with a KPA 500, but never over 250 watts. The antenna is a G5RV. The antenna matches OK using the internal FlexRadio 6400 tuner...
> //dave
> WB7ELY
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to dave at nk7z.net