OK, thanks. I had not altered DATA-MD since the radio arrived from Elecraft. I guess that was set-up default for AFSK A.
I also note that I found the WIDTH control was narrowed to 45bps in LSB, so I opened it up as high as 4-KHz. There is still roll off below 200-Hz. That is fine for me as I find some harmonics of 60-Hz below this so its good to reject the bottom 200-Hz. My FT-847 exhibits the same LF roll-off when connected thru my HB soundcard I/F, yet strong eme signals can still be seen below that. With FL1 selected (13-KHz) and WIDTH adjusted to 4-KHz, and DATA MD showing DATA-A USB, I get 200-3550 Hz display in spectraJT waterfall (JT-65B). If I switch to FL2 (2.8-KHz rooofing filter) it narrows down to 250-2800 Hz. But the fun is that the K3 does not remember my settings as soon as I select another frequency from memory (it puts DATA-A back into 45Bps AFSK A LSB). So now I will have to figure out how to get the K3 to remember my settings, or forget using the K3 Freq Memory Editor for programming the K3 memories. I do not see anywhere in the Memory Editor for setting up DATA MD. I went thru my digital channels and DATA-A is randomly either DATA-A USB or DATA-A AFSK LSB. 73, Ed At 01:44 PM 8/13/2011, Joe Subich, W4TV wrote: > > From this it appears TX EQ affects the audio passband in DATA., as > > well as, SSB. > > >No, from that it appears that you have DATA configured for AFSK A and >not DATA A. AFSK A shifts the passband to center on the MARK/SPACE >tones as defined by the MARK frequency - i.e., FC = (MARK+SPACE)/2 > >At 900-3400 Hz your FC is close to 2210 Hz which is FC for MARK=2125. > >73, > > ... Joe, W4TV > > >On 8/13/2011 3:22 PM, Edward R. Cole wrote: >>I checked with WSJT9/JT-65B running the spectraJT waterfall: >>I have no Rx EQ set up. >> >>TX EQ for SSB is -16, -16, -9, 0, 0,+3,+6,+6 >>With USB I have display 500-Hz to 2800-Hz >>With DATA I have display for 900-Hz to 3400-Hz >> >>with no TX EQ: >>USB displays 250-2800 Hz >>DATA displays 250-3400 Hz >> >> From this it appears TX EQ affects the audio passband in DATA., as >>well as, SSB. >> >>Cutting off the low freq below 900-Hz is a disadvantage for JT-65. >> >> >>73, Ed - KL7UW, WD2XSH/45 >>====================================== >>BP40IQ 500 KHz - 10-GHz www.kl7uw.com >>EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-? >>DUBUS Magazine USA Rep [email protected] >>====================================== >> >>______________________________________________________________ >>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 > > >73, Ed - KL7UW, WD2XSH/45 >====================================== >BP40IQ 500 KHz - 10-GHz www.kl7uw.com >EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-? >DUBUS Magazine USA Rep [email protected] >====================================== ______________________________________________________________ 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
