Driver/car owner transponder's should "ALWAYS"
be clean & the biggest problem
"at my local track" is the driver/owners of the cars don't mount the transponder properly
You can tell some one roll there car under the start/finish 20 times an it works, then in race they miss laps.
You have to talk to driver/owners to reposition there transponder.
Transponders are almost 1/3 the price of AMBrc
(ambrc transponders can be had cheaper than this, just an EXAMPLE)
The system is worth every cent that you pay for itif the transponders are mounted correctly
Can you tell I HATE COUNTING MISSED LAPS