Dear Lidia,

Thanks for your comments in respect of my recordings of Tesla Coils.
The sound I have recorded sounds pretty much like the noise I am 
perceiving, albeit at a much reduced volume level to the recordings I have 
made.
I can assure you there are no musical instruments involved in my recordings!

Anyone can recreate the sound I have made! 
A child's toy known as A Plasma Sphere is a Tesla Coil!

To do this experiment:

Sound record a Plasma Sphere, while it is discharging its energy directly 
into sound recorder on your computer and then slow it down around 100% or 
more, scaling the noise down  to the frequency that matches your perceived 
Hum and see what results you get.

I await your reply and comments of your experience!

Meanwhile, I am still trying to find out if Tesla coils make up a portion 
of  the antenna on mobile phone masts.
I have searched the internet for a component schematic for mobile phone 
masts, but none appear to exist!
I wonder why?

Does anyone on the Forum know anything about Mobile Phone Antenna 
components?

Barry.

On Wednesday, 7 May 2014 16:25:52 UTC+1, Barry Fletcher wrote:
>
> Dear Forum and Fellow Hum Sufferers,
>
> I have been experimenting with Tesla Coils recently. I have sound recorded 
> some of their audible characteristics. Please have a listen to 2 of these 
> recordings.
> Let me know if they strike a chord in your perception of the Hum.
>
> Regards 
>
> Barry.
>

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