Thanks for the time and comments.

> It has happened to me and has happened
> to everyone. I still have a ~2.5GHz dual cpu laptop in the house which
> efficiently jams WIFI to the point where the noise 'skirts' produced by i=
t raise
> the noise floor of the nearby WiFi ap to the point where one needs to mov=
e in to
> 2 meters from the ap with another laptop to connect in despite of plenty =
of
> signal!

I have a small branded SMPSU that takes out my home WIFI.

>
> There are many ways to do this, including snap-on cores like this one:
>
>   http://www.amazon.com/Ferrite-Core-Cord-Noise-Suppressor/dp/B0002MQGEK

We have access to many used cores like this and ideal for experimenting.
>
> or diy, by winding a few turns of the connection wires to the MPPT on lar=
ge
> ferrite EE or EI cores. Large, on account of the relatively thick wires u=
sed.
>
>
> Hunting down intractable RFI/EMI problems is 'fun'. I took almost a year =
to pin
> the problem on that laptop and I am still not sure it is that alone, it m=
ight
> have 'brothers and sisters' in the building and in the neighborhood.

It took some time for me to track down the noisy Mobile Phone PSU.  I
am not looking forward to the 'fun' in the short term.  You have
sufficiently scared me into wanting to avoid the arduous task of
trying to filter the noise.  At first opportunity I will replace with
non-mppt reg and this will soon prove either way if this is in fact
the culprit.  Once this is done then I will enjoy the 'fun' of
filtering.  This system is isolated from any other noisy source by
approx 10kms so it will make the task a bit easier.  It is however,
often a hot (I have elimated high temperatures as a cause) hash fly
and bug infested site that I want to reduce time spent there as much
as possible.

>
> Sorry for the long posting, the subject hit a raw nerve here...
>
Again thanks for taking the time, the lengthy post was a welcome read.

Justin
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