[sdiy] 100 MHz EMI, what can it be?

harrybissell harrybissell at prodigy.net
Tue Apr 15 05:35:01 CEST 2003


Hmmm.... good idea if you install it yourself. It would be really hard to get a
general contractor to understand what you were trying to achieve...

Also you'd have to be really careful with all openings... especially the HVAC
stuff...

...and the door. Don't forget the door (esp. if you finish the shielding with
you
INSIDE...)   :^P

H^) harry

Grant Richter wrote:

> > The air is full of RF, the railway will add
> > 16 2/3 Hz power line noise and magnetic fields
> > to that. Could you ask for more for such a
> > test? ;->
>
> In one interview with Wendy Carlos, she talked about building her studio
> with aluminum backed drywall, and and connecting and grounding all of them
> to form a Faraday shield around the entire studio.
>
> She mentioned a 10 dB drop in the noise floor of analog gear, and realized
> some of the transistor hiss was actually rectified broadband RF.
>
> That would be a good tip if you were building a new studio installation. I
> don't think aluminum backed drywall costs that much more than the regular
> kind.
>
> Of course, this is electrostatic shielding, magnetic shielding would be much
> more expensive.



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