There are some not understood faults in the use of VAC, it being closed source, etc.
The following is a general rule of thumb. Open on the PowerSDR side, a VAC cable that is a integer divisor of the sample rate in the radio. Open the MixW, etc. AFTER this cable has been opened by PowerSDR. The internal sample rate conversion and buffering inside VAC then adjusts correctly. I really wish we had an open source, free replacement for VAC but I have stopped hoping for it. In general Windows sux and Vista sux worst of all and building a virtual sound card from the device developers kit to support all of these platforms is a painful process to say the very least. Bob N4HY ARRL SDR Working Group Chair Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. "Trample the slow .... Hurdle the dead" -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dudley Hurry Sent: Saturday, July 19, 2008 9:12 PM To: Brian Lloyd Cc: FlexRadio Reflector Subject: Re: [Flexradio] differences between PSK31 demodulators Brian, Try DM780 that comes with Ham Radio Deluxe. You have to download the entire HRD package, but then you can run only DM-780 for the digital. In the Super Browser, you can have 20 to 30 PSK QSOs going at once, and it's decode rate is better than MixW I think.. 73, Dudley WA5QPZ Brian Lloyd wrote: > Making progress here. VAC is working and I am trying different digital- > mode applications. It is interesting to see how different the quality > of the copy is. I have my MacBook Pro connected via analog cable to > line out and am using CocoaModem to monitor the off-air signal as I > fumble with VAC and various digital mode programs on the PC, i.e. MixW > and MultiPSK. It is interesting to see the difference in the quality > of the copy between the various programs. Right now I am looking at > both the Mac and PC printing out a PSK31 QSO but the error rate for > MixW is *MUCH* higher than the error rate in CocoaModem on the Mac. > Not having any other experience with this what should I expect? > > No, I have not tried routing the analog signal to the sound card in > the PC to see how that works. > > So, since I have no experience with Windows-based soundcard digital > mode programs, should I be looking at something other than MixW? > MultiPSK's UI is much more cluttered but seems to work pretty well. I > occasionally play with PSK31 but am much more interested in more > robust modes like MFSK and Olivia. > > -- > > 73 de Brian, WB6RQN > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com _______________________________________________ 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://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
