RANGE CHECK?? We're supposed to RANGE CHECK!?

All kidding aside, for my glow planes I range check once prior to maiden and then again if I do any repairs or mods of any kind.

For larger planes with gas engines..., (in addition to above), I check at every new field and any time I have removed the cowl for any reason, just in case the shielded iggy wires spring a leak. I always check with the engine running and about double the mfg. recommended distance.

The biggest radio threat you face is being 'shot-down' by a fellow flyer, and you can't do anything about that. I have been 'shot-down' twice in the last month, but luckily was able to yell loudly and quickly enough to save my plane. (I'm sure I was not polite about it).