Topband: RF Shielding of shed/shack

[Jim Brown]

On Sun, 10 Aug 2008 16:58:24 +0200, Rune Øye wrote:

>I want to shield the small shed where all equipment will be 
>installed and wondering if i can use chicken wire. The experience 
>when i build up this remote station is that Radio and computer have
>to be total "RF dead".

I believe that your concern with shielding is misguided. Before you 
go to the considerable trouble to try this, I suggest that you study 
the RFI tutorial on my website. 

http://audiosystemsgroup.com/publish

Also buy and study Henry Ott's excellent text on EMC, especially the 
section on shielding. Google on his name to find it. Building a 
useful shielded room requres that there be no openings, and that all 
cables coming through the shield must be bonded or RF-bypassed to 
the shield. 

I have done considerable work on EMC, and am of the opinion that RFI 
issues are largely caused by pin 1 problems, and secondarily by poor 
shielding of equipment. There are FAR less costly ways to solve the 
pin 1 problems. A proper shielded room will fix the lousy shielding, 
but you can probably replace the poorly shielded equipment for a lot 
less money that you could build a shielded room. 

73,

Jim Brown K9YC