On February 22, 2009 at 01:00, AndyM said...
Turns out, I had a U1, recently swapped with a new U2 in my laptop bag, in the car. The car is a good 75ft from the RM433...
I've played that game before!
I spent a half hour dealing with what I thought must be the worst RF interference EVER!
No more batteries in transported remotes! ;-)