[Amps] Very Off topic : AM without sidebands ?? :-) ++

[David Cutter]

I've often wondered how people in places like Droitwich (198kHz) get on with 
the BBC coming thro their teeth fillings etc...  ( : o {
Now we have plastic teeth fillings and plastic gutters and plastic drain 
pipes, plastic plumbing...

David
G3UNA

. One thing was that "in the old days" they
> always experienced a lot more unwanted rectification (detection) of
> AM signals in MECHANICAL devices like rain gutters, downpipes and so
> on, giving rise to actual Audio Output from these non-electronic things.
> He claimed that near QRO AM transmitters people used to hear the news
> from the strangest of things... He had also noted that in "modern days"
> this did not seem to happen very often. This gives rise to Q no. 1:
> What changed,- if anything ??