[aprssig] RE: GBAS

[Bob Bruninga]

> What would be cool is if APRS supported an 
> error correction uplink capability
> You would need a DGPS capable input GPS.

The original APRS included DGPS correction as well as local diffirential transmission.  Your home APRSdos would compare its observed GPS position to its known position, and could then send out an offset to all local APRS stations.

But once they turned off S/A, there was not much need for it and none of the APRS follow-on clones implemented it...

Bob, WB4APR