That's right Ken. And don't forget to mention that you would also have to
avoid ground loops inside the cage.
We had a faraday cage at work (Kodak) where we did RF emissions and
susceptibility testing. The cage was build to the max. You have no idea
the money spent. SOLID copper walls, etc.
Still had noise like hell inside.
73 de Gary, AA2IZ
----- Original Message -----
From: "Ken Brown" <ken.d.brown@hawaiiantel.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, April 04, 2009 4:20 PM
Subject: [TenTec] Faraday cage
The ideal is a Faraday Cage - enclosing your shack in a (nearly) solid
conducting box.
The only way a Faraday cage around your shack could save your radio
equipment from the effects of RF would be if every single cable had
perfectly balanced RF currents so that no cable inside the shack Faraday
cage radiated any RF, and every piece of equipment (except perhaps the
one you are trying to protect from RF by shielding and bypassing
everything else instead of this one piece of equipment) would have to
have proper shielding and RF bypassing of all leads that entered/exited
each piece of equipment. If you could not accomplish all of that, the
Faraday cage would do nothing for you. The Faraday cage could even have
the effect of increasing the RF problems by virtue of standing wave
resonances making hot spots in some places at some frequencies. Much
less effort and expense to properly shield and bypass the piece of
equipment that has the problem.
DE N6KB
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