Thanks Brian and Jay, VERY useful information. I will check Windows settings and also buffalo sizes for USB and Digu.
Andy K3UK On Sat, Jun 22, 2013 at 12:25 PM, Brian Lloyd <[email protected]> wrote: > On Sat, Jun 22, 2013 at 10:21 AM, Jay <[email protected]> wrote: > >> Andrew >> >> I'm not seeing what you are. I can get the filter width in both USB and >> DIGU down as small as 40hz and still get something decoded. what AF freq >> are you centering the filter on in USB. Im using 1500hz as the center for >> both, it is harder to get a filter centered at 1500hz in USB mode but can >> manage it. it's also kind of tough to get a 31hz signal centered in a 40hz >> filter, but I'm not seeing any difference in the width of the filters I can >> set in either mode. >> > > Filter resolution depends on DSP buffer size. Larger buffers mean sharper > filters and better filter resolution. I bet you are running different DSP > buffer sizes for USB and DIGU. If you set them the same the filters will > behave the same. > > But if you are running digital modes you want to run DIGU, not USB. You do > not want the speech processing to distort your signal so run DIGU. > > -- > Brian Lloyd, WB6RQN/J79BPL > 706 Flightline Drive > Spring Branch, TX 78070 > [email protected] > +1.916.877.5067 (USA) > > > > -- > Brian Lloyd, WB6RQN/J79BPL > 706 Flightline Drive > Spring Branch, TX 78070 > [email protected] > +1.916.877.5067 (USA) > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software innovation and other technical SDR > topics. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software innovation and other technical SDR topics.
