Interesting ... I am seeing issues with my KAT500 not holding a setting, but jumping to (and displaying) a frequency 200 - 300 KHz lower unpredictably during a Winlink Vara session. It always comes back to the correct frequency when the rig is transmitting, but has to go thru a short relay-clatter routine to get there.
This is on 80, 40 and 30 meters (all I have tested so far). For example, if the dial frequency is at 7101 the tuner can't seem to decide whether to sit on 7104 or 7096. That doesn't seem to cause a problem as much as when it suddenly drops to 6874, 6864 or 6856. I am seeing similar behavior on 80m and 30m. I recently did a total reset and reloaded the firmware (v01.75). Any thoughts? Bin width? Thx. 73 Lyn, W0LEN -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick Sent: Sunday, July 19, 2020 11:26 PM To: Andy Durbin Cc: Elecraft Reflector Subject: Re: [Elecraft] KPA1500 with K4 tracks VFOs with 1 kHz resolution Andy (K3WYC) wrote: > I still don't see the advantage of AUX bus giving the KPA1500 the TX frequency to 1 kHz resolution. What am I missing? Hi Andy, The improved resolution ensures that the correct bin is detected when you get within +/- 1 kHz of the target ATU LC data bin rather than +/- 8 kHz. This improves repeatability of selected LC values vs. VFO frequency, especially on 160 and 80 meters where it's most likely to matter. This also means that, in the future, we could use smaller bin width on some bands if desired. This could be helpful if you were using the ATU to fine-tune a very narrowband antenna such as a loop or electrically short vertical. 73, Wayne N6KR ______________________________________________________________ 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
