[TowerTalk] Screened walls and floors

[Grant Saviers]

We built a Faraday cage big enough for an engineer and equipment and 
learned that a special screen material is needed.  Regular copper 
screening has lots of crossovers that aren't really connected or worse 
are oxidized contacts and can make the noise worse.  A tech was assigned 
to solder the wires in strips every 4 inches x,y,z, which took a couple 
of days and made for a very unhappy tech.  The results were ugly but RF ok.

I don't see a benefit for a station.  IMO, it's a better use of time to 
concentrate on a good building perimeter ground, the entry plate, good 
chokes, and insuring no RFI sources from equipment inside the building.

A interesting reference 
http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf 
plus the choke studies by K9YC.

Grant KZ1W


On 12/4/2016 22:56 PM, Chris Hoelzle wrote:
> Hello All
>
>   
>
> I have an opportunity to do some extra work on my new ham room that will be
> in a large cement floor shop building well away from my home and neighbors.
>
>   
>
> I am wondering if anyone has gone to the effort of screening the walls and
> floors for noise reduction.
>
>   
>
> I have a room that I believe will be quiet, but I want to do the very best
> job possible as long as I am at it.
>
>   
>
> Ideas. please?
>
>   
>
> NN6CH
>
> Chris Hoelzle
> choelzle at cox.net
> Laguna Niguel, CA
>
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