I hate to say it but they don't work very well at all. Couldn't clock a LST at anything over 30km/h.

What are the options with gps. The bushnell seems to be the way to go as far as radar goes.

It would be nice to get a gps receiver which could transmit the data to a mobile/pda. That way it could be really small. My friend has gps in his phone but he is too scared to stick his phone in one of the trucks.

Boooooo Hissssssss Booooo

I still like my toy. I've heard that you have to be going directly towards or away from the gun to clock it. Did you take it out of 1/64 scale mode?

Yeah we tried everything. It worked when the trucks were going under about 30km/h once we cranked them up it wouldn't work. I even got hit a couple of times trying different angles. You may have more luck then we did. Give it a go.