[aprssig] How about DSC? was: Global FRS radio like AVRS

[Tapio Sokura]

Mark Fellhauer wrote:
> 538070070-MHL;(routine);from;998877666;Position N33° 12' W117° 23' 
> EOS;06-02-27 01:09:18
...
> The noted LAT/LON doesn't quite put that boat in the ocean, but about 
> 2000 feet inland, and the MMSI is not valid either.  But hey, the boat 
> could be sitting on a trailer on Windward Way in Oceanside, I guess.

Basic DSC only does locations to the nearest full minute, thus the 
position resolution is one nautical mile in N/S direction and a bit 
better in E/W direction. With AIS you can see the big ships with better 
resolution and more regularly.

   Tapio