[Lowfer] XGR PSK31 Tonight

[Steve Dove]

Hi John, Jay,

Last 20 minutes or so scribblings on 'Grabulator II'.

Interesting.  I was watching as Jay was revving up ahead of 
the event in both modes, too;  with an uncalibrated eyebone 
I'd give PSK say 70% accuracy, FEC 90%.  Jay was stronger, 
so fewer hits on him.

FEC seemed wider, taking up perhaps a whole 100Hz(!).  Is 
that the nature of the beast?  One would have thought that 
the FEC bit would just have doubled the time, not the 
spectrum.  Is there a white paper or somesuch about it anywhere?

         Cheers,

                 Steve

http://www.w3eee.com

John Andrews wrote:
> As Jay mentioned in a reply to an earlier message, we will be running a 
> PSK31 QSO tonight on 508.500 kHz starting at 0200 UTC. We plan to run 
> straight PSK31 until about 0210 UTC, then switch to PSKFEC31. I believe 
> the latter mode is only available through MultiPSK. We'd appreciate 
> comparison reports between the two modes -- it's expected that the FEC 
> version will be slower, but more bulletproof.
> 
> John Andrews, W1TAG / WE2XGR/3
>