Originally Posted by
snoopyrc
I have just recently recieved my RC4 decoder, and tonight I have mocked it up so that I can test in in the living room. In a mockup situation just passing the PT over the loop, the RC4 is registering the MRT transponder. Will this repeat itself in racing conditions? Who knows, but it looks promising. (Note: I am not talking about updated MRT transponders. Im talking about the old ones that are not supposed to read on an RC4.
Go figure.

It will read the older style MRT intermittently. It wont count it 100% of the time though. That is what has been reported for some time now.