ORIGINAL: nonstoprc
I highly recommend the following for any gas engine setup to avoid interference caused by the ignition:
1. use a PCM receyver
2. use nylon push rod for throttle control
3. maintain at least 12 inch between receiver system and ignition system
4. ground the ignition wire to the body of the engine
5. secure any loose wires
--qc
I have been flying gas engines since they came out about 1976 or so. I have violated evey single one of your rules most of the time. Especially the nylon push rod. I use a steel cable with a plastic quick link.
You left out the most important rule. That is use a resistor spark plug or a shielded system, or both