On 6/19/2014 1:00 PM, Mark Durenberger Mobile wrote:
> One of my many side interests is in chasing this stuff.  If you want a
> scare, walk around your home with an AM portable tuned to a weak
> station. My latest find: "Dimmer" noise that was traced to the Microwave
> fan-speed switch...was heard 30 feet from the house.
>
> Clearly this fan-speed is a solid-state control, and just as clearly the
> noise is far outside the FCC's limits for this kind of gear.  But the
> FCC doesn't ride herd on this stuff...except in egregious (or
> well-publicized) situations.
A friend of mine who's the chief engineer for a local folk club used to 
borrow my (single-coil, poorly shielded) pawnshop-special electric 
guitar as an RFI/EMI probe. It did a stellar job -- until I sold it. As 
a guitar it was pretty worthless. He went and got an unmounted pickup to 
use as a probe.

Peace,
Paul