[R-390] AN/URM-25s

[Roger Ruszkowski]

I thought a faraday cage was where capacitors were kept.

David / WB5UOM
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David,

We keep a lot more than capacitors in the cage.
A couple of the cages were designed for Elephants.
If any were to be found loose in the area there was a disaster plan to
round them up and put them in the cage. The cages were extremely high and
would serve to contain other large tall animals The cages were also designed to keep
large cats from climbing out of them. The Navy guys told me this was so.


The whole building was screened inside with what looked like brass window screen.
Then each room was also screened. Then the walls and ceilings were covered with acoustic ceiling tiles
to keep the audio reverberation in the rooms down. A chain link fence out side keep any one from getting close enough to listen through the walls.
Every rack was grounded to a copper ground cable. every ten feet or so along the cable was a 10 foot ground rod through the floor.
It was said that before the building was built the earth under the building was "treated" to make the earth more conductive to couple the ground system to the earth.

It was not just a cage. It started out in the antenna field and and continued right up to your ear in the head phones.

Roger AI4NI