[hophead]

"Damn, I wonder if this means my GPS units are obsolete?"

I don't think so. But to use the new signal you will need to upgrade to a newer unit. It was like the pre-WAAS units to the WAAS enabled units. Accuracy from 50 feet or so without WAAS to about 9 feet with WAAS enabled units.

[TXnMA]

Damn, I wonder if this means my GPS units are obsolete?"

In archaeological surveying and site data recording, I need all the accuracy/resolution I can get. Looks like I'll be trading in my SportTrak Topo for a new unit soon.

However, I may wait until the new generation of big flash memories is applied to palmtops. Then I will be able to load detailed topo maps onto the palmtop, and use a separate IIR GPS unit that communicates with the palmtop via Bluetooth.

Now the best I can do is use my (WAAS-enhanced) GPS connected via cable to my laptop to get 3-meter mapping accuracy...

Gotta love technology: what you spend a bundle on is already obsolete -- almost before you get a chance to use it... :-(