I went to the effort to put all my radio equipment in a 40' shipping
container where I used aluminum diamond plate on the marine plywood floor
not to keep EMI from getting in , but to keep all the switching power supply
detritus from getting out to my antenna! There were just too many sources of
interference to try and suppress them all. I have about 40 dB of suppression
due to the Faraday cage which I can improve in the future by screening
holes, vents, and maybe finger stock on the doors. I only had to filter the
AC coming in, feedline, and an Ethernet cable with common-mode chokes.
-W6DSR
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim
Brown
Sent: Tuesday, December 6, 2016 10:35 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Fwd: Screened walls and floors
On Tue,12/6/2016 10:20 AM, Hans Hammarquist via TowerTalk wrote:
> One big difference I noticed was a noticeable reduction of noise in the
receivers. This can maybe be because the closeness to the tower and the
antennas.
Nope. It's the result of the BONDING that you did -- all those cable shields
entering at the same point, bonded together, bonded to all the grounds in
your home, the power system green wire, etc. The Al foil had nothing to do
with it.
73, Jim K9YC
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