Originally Posted by
Ed Anderson
Decoder...............
Transponders
AMBrc...........
AMB House TP,. AMB DP,. MRT iPT,. MRT PTX,. MyL rc2,. MyL rc4 (hybrid),. MyL rc4 (purcy)
AMBrc3.........
AMB House TP,. AMB DP,. MRT iPT,. MRT PTX,. MyL rc2,. MyL rc4 (hybrid),. MyL rc4 (purcy)
MyLaps rc3....
AMB House TP,. AMB DP,. MRT iPT,. MRT PTX,. MyL rc2,. MyL rc4 (hybrid),. MyL rc4 (purcy)
MyLaps rc4....
AMB House TP,. AMB DP,.
MRT iPT,. MRT PTX,. MyL rc2,. MyL rc4 (hybrid),. MyL rc4 (purcy)

quoted because it lays everything out..
stopped by my track tonight, which just got it's updated decoder a couple race days ago.
the old AMBrc PT's DO work, as well as house PT's..Just like the list above shows.
Couple guys have MRT's, those worked as well. BUT it's been posted that some may have issues with counting every lap. This was not an issue, at my track.