Ummm ..don't have a good answer for your specific question. The last time I did it, I used an XG3 and calibrated each filter on each band (there are actually per-band phase/gain settings for each filter).
If you used an XG1 did you calibrate on the 40M fundamental, or was there enough 2nd harmonic to calibrate on 20M? I found considerable differences in per-band gain/phase settings. So it wouldn’t be surprising if the null depth is not quite as good on a band you had not specifically calibrated for. And in some cases you could still barely hear the alternate sideband — but it was very weak in any case. I also found that the automatic null routines didn’t always get to the deepest null. Elecraft says that it’s (60+ dB) good enough, and it likely is from any practical view point. But it was possible in some cases to improve the null slightly by a +/- 1 count manual adjustment of either the phase or gain setting after running the auto-null routine. It varied by band and filter, and manual tweaking didn’t always result in any improvement. Grant NQ5T > On Dec 26, 2020, at 10:44 AM, Steve Zabarnick <zabarn...@gmail.com> wrote: > > I recently noticed that I could hear the opposite sideband on my KX3. As a > result I tried using my XG1 to do the sideband cancellation calibration > described in the KXFL3 manual. During the calibration I could significantly > reduce the sideband so that it could no longer be heard by ear. But, once I > left calibration mode, I could still hear the opposite sideband from the > XG1. I did restart the KX3 to save these settings and confirmed that the > phase and amplitude settings were saved per filter. Any suggestions? > > Steve N9SZ > ______________________________________________________________ ______________________________________________________________ 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
