dirtybird, I respect your 40 years as an EE. As for point 2 and a spark lasting but 1ms, that may be so in a lab or with new equipment, properly shielded. Who knows how long spark propagation could occur with a poorly shielded, dirty, damp connection? Also, we're only interfering with a 100mw transmitter signal.

How do you explain the results of the heli fliers years ago? It's on the run ryder (one word) website.