George, Thanks for your inquiry.
That architecture change would make the computer sound card responsible for the D to A conversions and based on the problematic nature of supporting third-party consumer sound cards and their changing drivers, this would actually make the reliability and supportability of the radio worse. These are some of the primary reasons we abandoned this approach which was used with the SDR-1000 when we designed the FLEX family of SDRs.
If I may, what kind of computer are you using and what is your CW sending speed? Are you operating QSK?
There may be a configuration remedy. We have found that ensuring that the FLEX-1500 is on its own USB controller makes a big difference.
Tim Ellison, W4TME Product Management, Sales & Support FlexRadio Systems^(TM) 4616 W Howard Ln, Suite 1-150 Austin, TX 78728 Phone: 512-535-4713 Ext. 223 Email: [email protected] <mailto:[email protected]> Web: www.flexradio.com <http://www.flexradio.com> logo On 2/28/2012 8:40 AM, George Allen wrote:
I love my little F1.5K; but, must admit that I have some frustration when working CW with it. The USB delays make CW a bit difficult as the ear and the hand are out of sync. Admitted, using an external keyer with an external sidetone are a solution....but, then you really need to mix the F1.5K audio with the external sidetone into your phones. Since the signal processing is done in the computer, is there a way to route the F1.5K audio to a pair of USB earphones? If this were possible, it might reduce the USB delays considerably. Then, if there were a way to feed the key into the computer, rather than into the F1.5K box, the delays might be eliminated completely. I wonder if anyone has addressed this approach to the F1.5K CW issue? George K2CM Vestal, NY
_______________________________________________ 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 development and experimentalist who are using beta versions of the software.
