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Date: Mon, 05 Nov 2001 22:19:21 +0000
To: rsgb_lf_group@blacksheep.org
From: "Walter Blanchard" <blanch@pncl.co.uk>
Subject: Re: LF: Electronic water softeners
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At 17:41 05/11/01 Monday, you wrote:
>My ion-exchange resin water softener needs replacing. I am thinking of
>trying one of the electronic systems, but wonder if there are any LF QRM
>concerns (and how do I measure the hardness of the water)?
>
>73 de
>John Rabson G3PAI

Don't know about LF but they throw harmonics up into all the HF bands. I've 
had constant interference on 20, 15 and 10 from one thats about  500 metres 
away for the last five years. It consists of a length of wire wrapped 
around a copper water inlet pipe fed with an IC chopper output. How the AC 
gets through a copper pipe into the water beats me but the mfr says it does 
and it is then supposed to do miraculous things to the molecular structure 
of the water. The dear old lady who owns it believes it works and I haven't 
the heart to tell her she's wasted her money.  Our water here is neutral 
anyway so we don't need softeners.

Walter G3JKV.