Hi, Elecraft have a handy little utility called RxSbNull.exe which does the whole process. All you need is an up to date KX3, an up to date XG3, a Windows computer and the utility. It works like a charm. Turn the radio volume down before you start it though otherwise it’ll annoy the hell out of you.
Cheers Mark Forsyth http://jandmf.com VK3KW > On 12 Jun 2020, at 11:36 pm, Grant Youngman <ghyoung...@gmail.com> wrote: > > Elecraft Tech Support seems (understandably) a bit slow to respond at this > point. This is a repeat of a question I asked a few days ago. Maybe > someone else will see it and have some insight (?). > > I have redone the opposite sideband null procedure in my KX3 (#8342) with > KXFL3 filter board, using both the 2013 per-band null procedure, and the 2015 > KXFL3 installation/calibration instructions. The procedures are essentially > the same, with a minor difference in RIT setting, and the fact that the KXFL3 > installation manual calls this out only on 20M rather than on each band > individually. > > With my XG3 as a signal source, I get an excellent opposite sideband null > using either FL1 or FL2 bandwidth settings on all bands. With narrow > bandwidth and FL3 switched in, the null is very broad and shallow, and the > opposite sideband is reduced only on the order of 10dB (+/-) rather than the > very deep nulls (60+ dB) obtainable with FL1/FL2. As a result, the opposite > sideband remains clearly audible when tuning across a signal — say CW at 500 > Hz bandwidth, etc. > > If anyone else out there has done either of these procedures, did you get as > deep a null with FL3 as with FL1/FL2? I’m trying to determine if this is > normal, or if there's an issue in the radio, possibly with my KXFL3 board. > > Thanks … Grant NQ5T > ______________________________________________________________ > 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 vk3...@outlook.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
