I was wondering if anyone has any ideas or experience with my type of problem.

I recently purchased 3 of these MRT PTX transponders. One for me and two for my friend.

However I started having trouble with my unit. I have the PTX installed on an Kyosho Inferno GT1 with a KO Propo EX-10 Helios radio with FM 75mhz RF501f module and KR302f receiver. The unit worked great for a few races, then started to cause my radio to glitch uncontrollably. I cant explain why it caused the problem, but I can explain how I determined it was the PTX causing the problem.

With the PTX plugged in my radio glitched, with it unplugged it did not. I had an AMB transponder as a back up and it worked fine plugged into the same receiver. I had tried two of the same model receivers, and 3 different sets of crystals prior to switching to the AMB, all with the exact same result.

My questions are:

1. Are you aware of any interference caused by the PTX with a KO Propo 75mhz KR302f FM receiver, or any other FM receiver? If so what can I do to minimize it? It seems that the guys running 2.4ghz have no problems, Could it be an FM thing?

2. Is it possible that this is a power related issue? I was using a brand new 5 cell fully charged hump pack. I checked all wiring and even tried the battery plugged directly into the receiver with the same results.

3. What should I try next? I already plan on converting to 2.4ghz some day when I can afford it.

Thanks in advance for replies.

Hi,

would contact MRT tech support with this question firstly. They answered all my questions in timely and understandable manner.
MRT Customer Support [email protected]

Ya I did that yesterday before I posted here, but to a different email address. I re-sent the same email to the new address you posted. Thanks.

I went ahead and bought a KO 2.4ghz module and receiver yesterday. Hopefully that will be the end of the problems, but I would still like to hear if anyone has an idea or experience with this sort of problem.