Noise can be a major problem for transponder users.
At the 2011 Tour Down Under we experienced this first hand.
The transponder contractor had AMB pro chips and the standard decoder and loop system. The loop was set prior to the line with the trailing edge near the black line of the finish.
You could watch the noise level decrease as power was turned off to other devices in the vicinity.
The transponder technician got the best results by separating the power leads and running the AMB decoder on a separate generator. All in all it was a very frustrating time for him.
It was never attempted to move the loop further from the finish line.
Original Post
