Peter Bennett wrote in
news
WAAS correction data is transmitted by two (Inmarsat?) geosynchronous
satellites, not by any of the normal GPS satellites.


I wonder if the reason the Canal is not using them is the canal is below
the footprint, probably pointed at the USA?? Geo-birds use very directive
antenna arrays to produce a useable signal from 40-50K miles away. They
usually have a fixed footprint that looks like an oval over the states with
these antennas. Maybe WAAS doesn't work in Panama so well because of
this??

--
Larry