I had a similar problem a couple years ago. It turned out to be a lightning arrestor device on the 600 ohm OWL that was arcing over. I replaced it with a higher capacity unit, and the problem disappeared.
73 Lyn, W0LEN -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of hawley, charles j jr Sent: Thursday, February 03, 2022 10:44 PM To: Jack Brindle Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 drops out during voice peaks No, it’s always been on manual since I got it. And it never used to do this. Nothing is changed in the shack except in using a 4:1 balun instead of a 1:1. The timing is similar. Tomorrow I’ll reinstall that and see if it persists. An arc outside is a thought too. I will check my open wire feed line as well. Thanks for the replies. Jack BMW Motorcycles BMWMOA &RA #224 Chuck KE9UW Sent from my iPhone > On Feb 3, 2022, at 8:49 PM, Jack Brindle <jackbrin...@me.com> wrote: > > It sounds like you may have the KAT500 set for AUTO. Change it to MAN and it > should perform much better. > > The rapid signal changes associated with SSB operation can cause issues with > the sampling of the power in the directional coupler, > causing readings that make the KAT think it needs to do a tune. By using MAN > mode you get to decide when a tune is needed, > making everyone much happier. > > 73, > Jack, W6FB > > >> On Feb 3, 2022, at 6:20 PM, hawley, charles j jr <c-haw...@illinois.edu> >> wrote: >> >> I've been having my tuner go to high swr a random voice peak. >> The utility shows the right settings after a drop out but the Amp Key >> Interrupt box is checked. >> And the swr showing on the LEDs is high. >> Not sure what is going on. >> I get it back to operating at low swr by doing a tune. >> >> Chuck Hawley >> c-haw...@illinois.edu >> >> Amateur Radio, KE9UW >> aka Jack, BMW Motorcycles >> ______________________________________________________________ >> Elecraft mailing list >> Home: >> https://urldefense.com/v3/__http://mailman.qth.net/mailman/listinfo/elecraft__;!!DZ3fjg!uJDoy1FWxUYpz--TnKLEuyKIryM2XZeT_HBT2oKzgYNpYl-KQ2rQSEeX5EJJc65tGUzJ$ >> >> Help: >> https://urldefense.com/v3/__http://mailman.qth.net/mmfaq.htm__;!!DZ3fjg!uJDoy1FWxUYpz--TnKLEuyKIryM2XZeT_HBT2oKzgYNpYl-KQ2rQSEeX5EJJcx1CaJ9F$ >> >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: >> https://urldefense.com/v3/__http://www.qsl.net__;!!DZ3fjg!uJDoy1FWxUYpz--TnKLEuyKIryM2XZeT_HBT2oKzgYNpYl-KQ2rQSEeX5EJJc3luulr6$ >> >> Please help support this email list: >> https://urldefense.com/v3/__http://www.qsl.net/donate.html__;!!DZ3fjg!uJDoy1FWxUYpz--TnKLEuyKIryM2XZeT_HBT2oKzgYNpYl-KQ2rQSEeX5EJJc2RJLdJp$ >> >> Message delivered to jackbrin...@me.com > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 l...@lnainc.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@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 arch...@mail-archive.com
