Help! FMA M5 receiver problems
 

I have 3 FMA M5 receivers, and have had problems with two of them. I'm using a Hitec Eclipse 7 transmitter (without the variable frequency module). I'm not getting very good range with two of the three receivers. I've tried new crystals in the receivers and I've tried an after-market antenna on one of the receivers. Even still, I lose control completely sporadically and have crashed once due to it. Is it possible that my transmitter crystal is damaged? Am I doing something wrong? I have 3 single conversion receivers (GWS, Hitec) and have had great results with them (of course their range is lower). Any ideas? I follow all antenna and receiver placement recommendations.

RE: Help! FMA M5 receiver problems
 

Lynn,

That is odd since the M5 is a "full strength" dual conversion receiver. I have 2 of them and haven't seen any problems with my Futaba Super 8 transmitter.

Perhaps the planes that you had the M5 receiver in had noise from the power system. Since you had issues with 2 of the M5 receivers, I can see why you may question the transmitter.

Both companys, FMA Direct and Hitec, will take their products back for a re-calibration or testing. You may want to consider this during the Winter months.

Another idea is to have a friend try an M5 on his transmitter. This may help you to decide which component is giving you problems.

Good luck!

P.S. I'm moving this thread to the General forum.

RE: Help! FMA M5 receiver problems
 

I think Greg is on the right track, motor noise or equivalent. Your transmitter works fine with the single conversion receivers I would think it is OK. Double check the capacitors and diode (if any) on your motor did you follow the mfgrs recommendations exactly? Is a capacitor chipped or cracked? I hope you have short leads from your ESC to the motor.

I am a newbe with electric flying but a very oldbe with electronics. Good luck