I know what dirtybird is saying, and I agree with him.

Aside from what he said, it's plain that everything is not so black and white as you say, Dan. There are a hundred shades of gray in there, what with all the different radio brands, different types of batteries, servos, receivers, voltage regulators, Opto-kill switches, Opto-Kill switches WITH voltage regulators and adjustable voltages; and I'm sure I forgot plenty of other items.

There's more than one way for an electronic item to fail, and before you go into another soliloquy about your background, I should probably point out that there are many others in RCU with backgrounds in digital proportional electronic controls. Planes aren't the only things controlled by them, and aren't the only things affected adversely at times.

Most of the items you just mentioned aren't being contested, and they're mostly gas engine installation 101 items, and have been for many years, and most of them were developed for 72MhZ, including the spark plug reference. Though admittedly, I still look at the plug first if there's an issue, more out of a knee-jerk reaction than conscious troubleshooting policy.

And there's always something new to learn.

~ Jim ~[8D]