MarioMania said:
The FCC has passed approval on all these items, though they all destroy radio reception.
Most of them could be engineered to limit the radiation to almost zero, but that would cost a dollar or 5 more.
All of this could be stopped by the FCC.
Equipment replacemnt cycles often being 10 years or less, it wouldn't take forever to clean up the mess.
So the question is, why has the FCC not required such devices not produce AM interference.
That is the job that needed to be done when the body was created, and why they were created.
The interference level was destroying the viablility of the medium.
At that time it was out-of-control operation, frequency-hopping, and no regulation which caused interference.
There were also many cheap radios that also put out signals on the AM band itself.
Part the part 15 compliance for AM receivers was to keep local oscillator noise in radios SO FAR down in level that they
did not radiate enough to cause this problem except in close proximtiy, and even then it was only one one frequency,
that of the local mixer oscillator, not on a wide swath of bandwidth, as digital and chopped AC noise interference is.