> Get her to switch off the power to her house and see if the
> sound disappears. It's a quick test and will quickly narrow
> it down to "us" or "them"

She tried that quite early on, and it made no difference

> But Jinxs' original problem (or more correctly his friends
> problem) could be caused by bolt corrosion on the tower

The tower has been there for just a few months, so that's
unlikely, but not impossible. That it is a recent structure and
she had no problems before is another reason I think she's on
to something. We just have to figure out what the "something"
is

> Another alternative may be metal joints within her house (- does
> it have a galvanised iron roof?) doing the same thing

Will ask

> I have heard of bed springs rectifying signals from AM radio
> stations

And here's me buying a tuner like a sucker

> as well as metal tooth fillings causing problems when cracked

She has had dental work recently, notably having almagam
fillings removed and replaced with composite

> The last one should be easily verifiable by going to another
> place with high RF fields - get her to visit you Jinx and go for
> a drive along scenic drive through the ranges behind you, past
> another BCL tower ;)

> Another possibility - is it really coming from the tower?

Two suggestions I put to her. This list has really honed my
investigative process. Assume nothing about what the complainant
"says" it is

I asked her if she experienced this around any other tower, and
lord knows there are plenty of them. She said no, and will try it.
Whether I get a love-struck ride with an attractive single blonde
(-ish) Swede is something I was working on anyway ;-)

> It could be coming from the fuse board, and be due to a ground
> fault condition, causing ground currents from neighbouring
> consumers to come down the neutral and then to

I thought of perhaps buried cables, could be power or data, or
even someone in the area (she's not completely remote) who may
leave a faulty monitor on at night

One suggestion I gave her was to look at some sort of Faraday
cage. Some quick way of isolating herself from the RF to see if
that is what is really causing the problem. We discussed what
might be a suitable experiment, and came up with a grounded
panel van and aluminium foil. Whether this will be practical, I
don't know, but she's at straw-clutching stage. Was careful to
stay away from tin-foil hats and the wearers thereof, but if she
got a good night's sleep I actually think she might up for it

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist