Make sure you have your intenna FULLY extented out the car WITH the intenna tube.
Put TWO pieces of double sided tape between the car and the reciever.
Make sure your intenne is in ONE piece. Not frayed or cut in ANY way.
I like to mount FM and AM recivers AWAY from the motor and ESC.
It sounds like its on the reciever side, because the Number one this that leads to your problem is the reciever is BAD or it got damaged. Also your crystals could be broke.
Its either or, crystals or reciever. Try some tips above. If this problem happens again you have a damaged reciever for crystal.
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