I am puzzled by how my KAT3 is working. (FW 4.39/2.73) Just now, I was chasing some DX on 20m. I was listening on 14.020 with split up to 14.022.5. I called once and noticed the SWR was up around 3:1. That's ok, but I wanted to get it down a bit, so I killed split, moved VFO A down to a clear frequency near 14.018 or so, and hit ATU TUNE, which produced an SWR of 1.0:1 at 5w. Then I used my spotting program (DXLabs) to put me back on 14.020 split 14.022.5 and called again. SWR was back at 3:1. I repeated the process and got the same results again. So then I went up to 14.023 with VFO A and did he ATU TUNE, and all was well with the SWR at 1.0:1 transmitting on 14.022.5. So then, using the TUNE button, I check the SWR back down at 14.018 and it was 1.2:1. So, why was the original ATU TUNE at 14.018 not good enough at 14.022.5?
After going through the tuning process at 14.023, I can no longer repeat the original process. everything in the vicinity of 14.020 +/- 5kHz is 1.2:1 or less. Is there a description of the KAT3 algorithm somewhere? Also, I've wondered how the ATU memories are allocated across bands, and how many there are. 73, Randy, KS4L ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
