How did all of you think wireless computers worked? You need to get the measurement form the wheel to the display. RF interference is normal some of the newer computers are better using the digital signals. I used a Mavic WinTech last year and it worked really well but there were a few weird readings. As long as you know things are wacky and store your display/receiver somewhere with very little RF things should be OK.

Note: I do most of my riding on "country" roads with a city commute. I have changed back to a wired computer the ErgoBrian as I like to scroll with out having to move my hands.