Hi Rick, I did a brief side by side comparison with vbdigi and mixw a couple of months ago. The only MFSK mode in that version was MFSK16. The vbdigi program copied much deeper into the mud than mixw. There was quite a bit of static involved then.
The newer version (fldigi V3) has improved MFSK reception quite a bit. I do not fully understand the changes but I can say the changes work quite well. We have done some testing of MFSK32 and MFSK64. These modes now compete favorably with MT63. MFSK64 is almost as fast (not quite) as MT63 at 2000 hz bandwidth and MFSK64 is a bit more robust thasn MT63 at 2000 hz bandwidth. This is pretty significant because it uses about half the bandwidth. We have not tested MultiPSK, DM780 or IZ8BLY. We did try some testing with MT63 on DM780 but were not successful. It would be very interesting to see other people's observations as well. Howard K5HB ----- Original Message ---- From: Rick W <[EMAIL PROTECTED]> To: [email protected] Sent: Friday, September 26, 2008 6:56:53 PM Subject: Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW It would also be very interesting to see if the improved MFSK modes in fldigi works better than in other software, especially when affected by lightning static. My informal tests seemed to suggest not much difference, however, if there was any difference, it might suggest that Multipsk was ever so slightly better. When I have done some crude comparisons with actual off air tests between different programs, there is usually not a lot of difference but sometimes there may be slight variations where in some modes there will certain characters that are correctly displayed in one program, yet other characters are correct in the other program. Thus it is often a wash (no significant total difference). It did seem that Multipsk had the edge in some of my testing and when I mentioned this to an on the air contact, the other ham was adamant that his testing overwhelmingly showed that HRD/DM780 was the best by far. Sound card calibration differences perhaps? 73, Rick, KV9U David wrote: > Hi Tony.....have you tried fldigi...it is available from > http://w1hkj. com in both Windows XP and Vista as well as Linux..... > it has MT63 500,1000 and 2000 > > 73 David VK4BDJ >
