[aprssig] APRN news from Dayton!

Scott Miller scott at opentrac.org
Thu May 26 18:29:15 EDT 2011

> Consider the "narrowband" MP73-N format as well. There is an increasing
> amount of interest in this mode on 30 meters. Its occupied bandwidth of
> only 500 Hz makes it the only legal format for SSTV (in the US at least)
> on this non-voice band. There is now even a Yahoo! group dedicated to
> 30meterSSTV activity.

Any idea where I could find the detailed technical specs?  That's 
usually the hardest part of implementing new modes.  Lots of chatter out 
there, and people who think they know what they're talking about, but 
not much solid information.


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