A.M.B ( did you know ?


SYSTEM 20                       
The loop is a single insulated wire being set across the track in a loop at a minimum width of  46cm,1-5 feet (18”) with a resistor of 680 ohm. Which sits at the opposite side of the track from the AMB connection box, this connects to the coax cable and filters out unwanted interference.

The Loop length (track width may be up to 10 Meters (33 Feet) but longer loops do increase the risk of internal interference. For that reason the in track loop is preferred to a bridge construction.Keep the loop as far away as possible from the computer and other electronic equipment. For off road tracks the loop can be buried beneath the surface making sure the whole length is below the surface to eliminate it getting caught by a car passing over it, or it can be covered by a piece of carpet
The track design must be such that cars are not able to come near the pick-up loop within 60cm (2 feet).

From other parts of the track, also make sure that the cars are unable to drive over the coax cable to prevent unwanted detection of the Transponders. The AMB-PC and the AMB-232 software calculate the split time as being the middle between the first moment of contact with the passing transponder. The splitime is therefore related to the moment the transponder is passing the middle of the pick up loop.
Due to the differences in positions of Transponders in cars the AMB system-20 cannot determine up to the last centimeter which car has passed the finish line first. This must be in the hands of the race officials.
The lap-time however is not affected by the position of the Transponder in the car
The transponder must be mounted with the mounting pin pointing upwards or downwards and fixed with the proper ‘R’ clip.  The transponder must be able to “see” the pick up loop. A good position ie: not above receivers, servo’s, batteries and wiring will help with the number of hits (time of contact x 0,01sec) as indicated by AMB software. The hits are the number of times the loop picks up the signal from the transponder Since the AMB system-20 transponder, powered by a small NiCad, emits its output signal constantly, its output cannot be powerful.Outside sources (short-wave radio) can reduce the number of hits per passing severely. This can be detected by a reduction of sensitivity together with the red interference L.E.D showing

  • 1. Transponders
    AMBrc transponders give each RC vehicle a unique identification. When the vehicle passes over start-finish, each transponder will emit a unique signal the detection loop will pick up.

    There are two types of transponders available with the AMBrc system: The rechargeable (battery-powered) transponder, and the AMBrc Direct Powered transponder.

    With a simple connection to the RC receiver, the smaller and lighter Direct Powered personal transponder can be permanently installed, allowing each racer's ID number to be recognized by the AMBrc system. It's perfect for the avid racer.

    The rechargeable transponder is battery-powered and fixed to the RC car with a metal R-clip. Because it can be easily be attached from one car to another, the rechargeable transponder is ideal for clubs and track owners. Also needed with rechargeable transponders is a charger rack. The charger rack can hold and charge up to 20 AMB rechargeable transponders.
  • 2) Detection Loop
    The detection loop, which can be embedded into the track surface or suspended above the track using a bridge, picks up each transponder passing. The unique signal of the transponder is picked up by the detection loop and transferred to the AMBrc decoder via a coax cable. Several transponders can be picked up over one loop at exactly the same time, so no transponders will be missed, even if 5 or 6 RC cars pass the loop at exactly the same time.
  • 3) Decoder
    The AMBrc decoder receives data from the detection loop and combines each unique transponder signal with the exact passing time. It sends this information to a computer running AMBrc compatible timing software. The AMBrc decoder has an active USB port making the system extremely portable. The USB port can power the decoder and relay data back and forth using only one cable. With your laptop, AMBrc decoder, and detection loop, you are ready to race without needing a power extension cord. Ideal for those temporary parking lot tracks

FOR THE BEST PERFORMANCE ALL TRANSPONDERS MUST BE MOUNTED WITH THE PEG EITHER FACING THE GROUND OR THE SKY ie :- flat Vertical could result in not counting 

SPECIFICATIONS AMB SYSTEM-20
TRANSPONDER :-    weight 22 grams (without clip)
CLIP                                        7mm thick
CHARGE VOLTAGE :-            2,5-3.3 volts
CHARGE TIME :-                        12-20 hours (depending on charge voltage)
BATTERY LIFE:-             30 hours after a full charge.
CHARGER:-            INPUT             230-250 volts
Output            3,30v DC/350 mA

A.M.Brc System
The loop is a single wire that must be either buried in the Track at a maximum depth of 2cm ( 3/4") and 60cm
(2ft ) apart.The loop is sensetive to interference, sometimes emmited by nearby cables. When possible keep other cables 5M(15ft) away.Also make sure cars on other parts of the track will not get closer than 5m (15ft ) to the loop,to avoid false inputs.The loop can also be installed by using a bridge of non conductive material (preferably wood or PVC ) set at a maximum of 45cm (1 1/2 ft) in height ,( the lower the better) keeping the loop wire as short as possible at a minimum 45cm (1 1/2ft) apart
AMBrc Transponders can still be charged with a system 20 transponder charger provide the output is no more than 3.5 volts 1.2 amps. The Transponders require charging according to use ie: 1 hours charge gives 1 hours use

Zuiderhoutlaan 4
2012 PJ Haarlem
The Netherlands