On 11/03/2018 08:47, Brian Gaff wrote:
I can remember getting a lot of interference at a house. it was traced to a
so called water softener in a cupboard around a pipe. This seemed to consist
of some kind of electro magnet around a pipe fed from a naff circuit plugged
into the mains. Needless to say it did nothing but cause the limescale to
bunch together near the device, probably eventually building up inside it
and bunging up the system. There was still lime scale on all the taps,
though not as much according to the home owner.
Its not really a softener, its just a half baked idea that seldom works in
real situations.

I've got a "Scalemaster Magnetic Speedfit Scale Inhibitor" wrapped
around my mains water input pipe, though it's entirely passive with no
mains connection. No-one seems to know how - or if - these things work:
https://en.wikipedia.org/wiki/Magnetic_water_treatment

Maybe it's like copper (or magnetic) bracelets for rheumatism.

--
Max Demian