By Eric and I removing all of the impediments that were put in during the early days of CW to keep things in order. Now that we are full duplex, even on the SDR-1000, in the software, these impediments are no longer needed. The hardware switches faster than we thought it could. I set the semibreaking delay at 50ms and 40 wpm and after adjusting that Kent paddle (BLECH, not for me, maybe for others) I ripped off the page from the hand out blurb just to show people it could be done.
With the SDR-1000, my suggested minimum semi delay is 100ms. With the Flex-5000 (when we have not made a mistake in getting new commands in the right order), the cw transmitter sounds like a sidetone inserted into the receiver which recovers instantly. In fact, we got it to switch so fast that we were hearing the TX carrier leakage (very VERY low level) in the receiver after key up. The Flex 5000 switches very fast indeed. Full duplex in the software is the key to all of this new speed. The only thing keeping us from easily supporting TOR right now is the limitations of the VAC support. I will help Eric work on that later. Bob Jerry Flanders wrote: > At 11:36 AM 5/21/2007, Tim Ellison wrote: >> ... >> >> One of the highlights for me was watching Bob, N4HY blister off 40 WPM >> CW on the SDR-1000 just to prove to the doubters that the new SDR-X code >> (which should be officially released in the next 4 weeks or so) really >> has significantly reduced T/R latencies. >> > > I am confused - are you talking about just reducing the "paddle > contact closure to sidetone generation" time delay of the internal > keyer so you can use your ears normally when using a paddle, or > actual transmit/receive time delay which would help with moderate > speed QSK? if the latter, how did Bob overcome the SDR1000 T/R relay > switching lag? > > Jerry W4UK > > > _______________________________________________ > FlexRadio mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Knowledge Base: http://kb.flex-radio.com/ > FlexRadio Homepage: http://www.flex-radio.com/ > > -- AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair "If you're going to be crazy, you have to get paid for it or else you're going to be locked up." Hunter S. Thompson _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
