RCScrapyard ►FREE RC Classifieds: Buy and Sell Radio Control gear◄ AMB lap counters use a highly sophisticated software system in conjunction with personal transponders to count and time each lap the car makes within a specific time period, normally around 5 minutes. A transponder is an electronic device of around 1 inch (25mm) square that is placed normally inside the body shell of the car in a position where it is protected from damage. On Buggies this is normally under the back wing, and on sedans (saloons) the recommended placing is in the centre of the front wind shield, so that if the transponder is dislodged during a race (and it does happen) the transponder can be seen to be missing, and the car can be manually timed for each lap using the AMB Software and computer keyboard. If you are looking for a quick, cheap, low cost way into Radio Controlled Racing, by purchasing second hand, previously owned used equipment, spares parts and components, used for RC Cars, Airplanes and Boats, or want to upgrade your existing setup, the pages of this site are the best, easiest and cheapest way to find exactly what you want. This section covers new and used Full AMB Lap Counting Software and Hardware packages, as well as Personal AMB Transponders For Sale at cheap, bargain prices.