<DIV>John,</DIV>
<DIV> </DIV>
<DIV>I disagree. The definition of a "Faraday <STRONG>CAGE</STRONG>", which is what Bill said, is a completely conductive sealed enclosure.</DIV>
<DIV> </DIV>
<DIV>Also, the edges don't have to be fully bonded together for RF protection. They can be stitched together at intervals depending on how high in frequency you want attenuation. The closer the spacing, the higher the cutoff frequency. Obviously, if you want cutoff up into the gigahertz range, you pretty much need a continuous bond.</DIV>
<DIV> </DIV>
<DIV><A href="http://www.boltlightningprotection.com/Elemental_Faraday_Cage.htm">http://www.boltlightningprotection.com/Elemental_Faraday_Cage.htm</A></DIV>
<DIV> </DIV>
<DIV><A href="http://en.wikipedia.org/wiki/Faraday_cage">http://en.wikipedia.org/wiki/Faraday_cage</A></DIV>
<DIV> </DIV>
<DIV>Bob.</DIV>
<DIV><BR><BR><B><I>John Ferrell <johnferrell@earthlink.net></I></B> wrote:</DIV>
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<DIV><FONT face=Arial size=2>Sorry to get picky, but a Faraday shield is not an electromagnetic field, it is an electrostatic shield. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>An rf tight room needs the edges fully bonded together and a Faraday shield requires that they be insulated. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think everyone knows what is being said, but I felt obliged to add the detail. </FONT></DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR>My Competition is not my enemy! <BR><A href="http://dixienc.us/">http://DixieNC.US</A><BR></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=bob@toprudder.com href="mailto:bob@toprudder.com">Bob Richards</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, November 22, 2004 1:06 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Measuring Surface Flatness (was "Cabinet Grade Particle Board")</DIV>
<DIV><BR></DIV>
<DIV>That's what it is. No RF gets in or out. Something like 110dB attenuation.</DIV>
<DIV> </DIV>
<DIV>Bob.</DIV>
<DIV><BR><BR><B><I>Bill Glaze <<A href="mailto:billglaze@triad.rr.com">billglaze@triad.rr.com</A>></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Bob:<BR>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!<SPAN class=moz-smiley-s14><SPAN> O:-) </SPAN></SPAN>) <BR>Bill Glaze<BR><BR></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE>