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.

Doubt that you have anything less than the version 4.3.xxx which is the RC4. Like was said, you will get occasional counts from the MRT's.
Did you get the $330 deal?