Quote:
Originally Posted by x313
The new breed of MRT are fine..
I use them at RC4 venues with no problems at all, and you can replace the leads... 
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Correct
New MTR PTX is compatible with the new RC4 decoders and the older ones.
If your looking at buying a used MRT PTX that's RC4 compatible make sure it blinks on power up.
https://www.youtube.com/watch?v=SiQC_P72sfk
Here's the previous older model showing how to change the PT number should you not have your own number and there's a clash of numbers at a race meeting. You can do the same on the newer model also
https://www.youtube.com/watch?v=gVk03EtwdmY