--- In digitalradio@yahoogroups.com, Tony <[EMAIL PROTECTED]> wrote: > > Roger Andy... > > I intend to do the same. I'm QRV on 14236.0 at 1445z > > Tony KT2Q > >
Tony and I had a great QSO today using digital voice in WinDRM on 7228 during local morning, approximately 300 miles apart, both using dipoles and about 70 watts. The signal to noise ratio for Tony KT2Q's signal peaked at 18.1 at my end, and was averaging about 15.0 . Tony's audio was very good, I will upload a sample later after I have edited the MP3 file. I received about 95% of his transmissions over the half-hour that we communicated. We tried all three codecs supported by WinDRM (SPEEX, MELP, and LPC 10). MELP was clearly superior in audio quality but we noticed NO difference in SNR threshold, it appears that the same SNR is required for all three. Tony made an interesting comment, he suggested that the audio produced by DV has much less "listener fatigue" than SSB analog voice and thus longer QSOs take less effort. I had to remind myself I was transmitting a couple of times, I was talking a fairly long time...like when on Skype or something. Better get used to turning things over before I toast my finals. Andy K3UK Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
