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Old 10-07-2016 | 08:52 AM
  #5  
brew99
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From: GreatWhiteNorth
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The older AMB transponders still work with the newest decoder RC4 firmware, so no issues.

If you know you will only attend a track that has the newest firmware, then the "3-wire" would be sufficient. If you possibly could be going to a track that hasn't upgraded their firmware, it's best to get one of the older version transponders (2-wire)
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