On Mon, Feb 1, 2010 at 8:37 PM, Steven L Hess <sh...@bak.rr.com> wrote: > That was with no RF out it bumps up to about -80 on the display with 17 > watts out displayed under fldigi. DM780 has a spurs too. -100 on the > display with 26 watts out on the display at 14.070. -80 on 7.035 with 21 > watts actually on the air. I guess I am just overly concerned with what > I can see. > > I don't see a filter as a solution as it defeats the purpose of how > PSK31 software works. You could be constantly modifying your filter > where you should just be selecting a frequency with your mouse. Since > radio is better the software needs to be better too.
I use narrow transmit filters with fldigi. The trick is to use the QSY feature in fldigi to bring the signal to one AF frequency, the "sweet spot". I set that to be 1500 Hz and then set my RX filter (and TX filter) around that. Click tune the desired signal and then hit the QSY button. Actually I have taking to doing the click tuning using the waterfall in PowerSDR instead of in fldigi. With the DIGU offset set to the "sweet spot" (1500Hz), I just click on the signal in PowerSDR and >POOF< instant copy. Dave, W1HKJ, has made improvements to the spectral purity of fldigi. I noticed the same thing you did and pointed it out to him in Oliva. The extra products are now down substantially (more than 80dB) which is plenty adequate. -- 73 de Brian, WB6RQN/J79BPL _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
