Many thanks and a Happy New Year to all! 73 from David GM4JJJ
> On 3 Jan 2017, at 21:46, Nicklas Johnson <n...@n6ol.us> wrote: > > Thank you, Wayne! At least we know we're not crazy :-) > > Nick / N6OL > >> On 3 January 2017 at 13:45, Wayne Burdick <n...@elecraft.com> wrote: >> This is on the KX3 firmware list. I'll move it up a notch. >> >> Wayne >> N6KR >> >> >> On Jan 3, 2017, at 12:16 AM, David Anderson via Elecraft >> <elecraft@mailman.qth.net> wrote: >> >> > Nick, >> > >> > Thank you for bringing this up. >> > >> > I never did get a satisfactory explanation, I contacted support too but >> > that didn't get me anywhere either, I don't think they understood my >> > question, which is quite simple really, why can't we get the same >> > bandwidth in Data mode as in SSB mode? I think it's a simple oversight, >> > but nobody seemed interested in acknowledging it or fixing it. >> > >> > >> > 73 from David GM4JJJ >> > >> >> On 2 Jan 2017, at 23:54, Nicklas Johnson <n...@n6ol.us> wrote: >> >> >> >> Jörg in the Elecraft KX3 group on Facebook had an interesting observation: >> >> with WJST's waterfall, if the "flatten" mode is on, it produces some >> >> unusual artifacts in the presence of sharp spectrum drop-offs, and indeed >> >> if I turn off the "flatten" feature and manually set the zero point for >> >> the >> >> waterfall, the artifacts go away. >> >> >> >> It's still an open question as to why the data-a mode has a steep drop-off >> >> at 400Hz when the PBT settings on the rig would seem to indicate >> >> otherwise, >> >> and the same drop-off isn't there in USB mode. >> >> >> >> I see searching on "400 Hz" that GM4JJJ had the same question here on the >> >> last back in July 2015, but never really got an answer. I basically have >> >> the same question as this one: >> >> https://www.mail-archive.com/elecraft@mailman.qth.net/msg183837.html >> >> >> >> Nick >> >> >> >> >> >>> On 2 January 2017 at 12:06, Nicklas Johnson <n...@n6ol.us> wrote: >> >>> >> >>> I'm seeing some unexpected audio artifacts when using DATA A mode with >> >>> the >> >>> latest production firmware on my KX3, on all bands. This is something I >> >>> observe when the PBT BW is set all the way wide (4KHz) and FC is >> >>> centered. >> >>> >> >>> In DATA mode, there's an audio drop-off between 200 and 325 Hz, with an >> >>> almost completely dead audio "hole" between 250 and 300 Hz. Then there's >> >>> some additional noise between 350 and 500 Hz. >> >>> >> >>> If I switch to USB mode (with no EQ or audio effects applied, naturally), >> >>> all of these artifacts go away, and it's perfectly smooth across the >> >>> spectrum. No drop-off, no noise. >> >>> >> >>> Pictures of the waterfalls for comparison here: http://imgur.com/a/AjHu4 >> >>> >> >>> Am I doing something wrong, or is there something I should check? I've >> >>> taken the usual steps, but it's plausible I've missed something. >> >>> >> >>> Nick >> >>> >> >>> -- >> >>> *N6OL* >> >>> Saying something doesn't make it true. Belief in something doesn't make >> >>> it real. And if you have to lie to support a position, that position is >> >>> not >> >>> worth supporting. >> >>> >> >> >> >> >> >> >> >> -- >> >> *N6OL* >> >> Saying something doesn't make it true. Belief in something doesn't make >> >> it >> >> real. And if you have to lie to support a position, that position is not >> >> worth supporting. >> >> ______________________________________________________________ >> >> 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 gm4...@yahoo.co.uk >> > >> > ______________________________________________________________ >> > 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 n...@elecraft.com >> > > > > -- > N6OL > Saying something doesn't make it true. Belief in something doesn't make it > real. And if you have to lie to support a position, that position is not > worth supporting. ______________________________________________________________ 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
