Hi Terry,
go to the following site:
http://www.beaconworld.org.uk/download.htm
then near the bottom is a section called DGPS Databases and Articles. Within
that is a pdf file called Introduction to DGPS DXing. This should answer a
lot of questions about DGPS and it talks about software for decoding it.
This site is excellent for info about LW in general.

Al KA5JGV


wrote in message
Does anyone know if there are any software programs
to decode the FSK? The DGPS stations are about evenly
split between 100 and 200 bps.
Terry