Faraday Cage

[Bill Glaze]

Roger that, Ron.  (Case Proved, Q.E.D.<VBG>)  Bill Glaze

Ron Van Putte wrote:

>
>
> On Nov 23, 2004, at 2:08 PM, John Ferrell wrote:
>
>     Sorry to get picky, but a Faraday shield is not an electromagnetic
>     field, it is an electrostatic shield.
>      
>     An rf tight room needs the edges fully bonded together and a
>     Faraday shield requires that they be insulated.
>      
>     I think everyone knows what is being said, but I felt obliged to
>     add the detail.
>
>
> Well, I'm glad we got that straightened out. I was going to lose sleep 
> tonight. <VBG>
>
> BTW, RVP doesn't have "Senior Moments", at least I don't remember 
> having any.
>
> Ron Van Putte
>
>     ----- Original Message -----
>     From: Bob Richards
>     To: discussion at nsrca.org
>     Sent: Monday, November 22, 2004 1:06 PM
>     Subject: Re: Measuring Surface Flatness (was "Cabinet Grade
>     Particle Board")
>
>     That's what it is. No RF gets in or out. Something like 110dB
>     attenuation.
>      
>     Bob.
>
>
>     Bill Glaze <billglaze at triad.rr.com> wrote:
>     Bob:
>     Do I recall when such a room as you describe was known as a
>     "Faraday Cage?"  Or am I having one of RvP's "Senior Moments?" 
>     (No offense, Ron! O:-) )
>     Bill Glaze
>
>     Bob Richards wrote:
>
>     The ideal material I have seen is used in RF shielded room walls.
>     It is 3/4" high-density particle board, skinned with galvanized
>     steel on both sides, maybe 28ga. Very flat, and very smooth. It
>     will bow just a little, maybe 1/2 inch at the most, when you pick
>     it up from the end. Came in 4' x 12' as I recall. Don't have any
>     idea where you could purchase it at a reasonable cost. I was
>     hoping they would have a sheet of it leftover when they built one
>     of the chambers where I used to work, but they didn't.
>      
>     Bob Richards.
>
>
>     John Ferrell <johnferrell at earthlink.net> wrote:
>     The test for a Pool Table is to put a straight edge across it and
>     try to slide a dollar bill under it.
>      
>     BTW, I am surprised to hear the talk about using pins. One of the
>     first things Dave Guerin taught me was to use masking tape instead!
>      
>     John Ferrell  
>     My Competition is not my enemy!
>     http://DixieNC.US
>     ----- Original Message -----
>     From: Mark Grabowski
>     To: 'discussion at nsrca.org'
>     Sent: Friday, November 19, 2004 11:21 AM
>     Subject: Measuring Surface Flatness (was "Cabinet Grade Particle
>     Board")
>
>
>     We've seen some great ideas from several folks. However, a common
>     element to this discussion is that you need to measure how flat
>     the surface winds up. What tricks are you guys using to actually
>     measure how flat the surface is of the bench you just built?
>
>
>
>     Bob Richards
>     bob at toprudder.com
>     http://www.toprudder.com
>
>
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