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Re: Federal Signals Soundproof Test Room - 1955
Posted: Mon Jan 06, 2014 11:18 pm
by holler
We have rooms similiar to that at work. The walls, floors, and ceilings are covered with pyramid shaped pieces of foam that absorb RF from high powered aircraft radars. It looks like something out of a children's nightmare.
Re: Federal Signals Soundproof Test Room - 1955
Posted: Tue Jan 07, 2014 12:19 am
by Jim Z
yeah, even though they have a different job to do, RF anechoic chambers look surprisingly similar to acoustic anechoic chambers. a few jobs ago we had an RF anechoic chamber at our building; it was automotive-geared so the RF attenuation was taken care of by ferrite tiles places all over the walls and ceiling.
'cept those (4"x4") ferrite tiles were $15 each. And there were hundreds of them in that room.
Re: Federal Signals Soundproof Test Room - 1955
Posted: Tue Jan 07, 2014 2:59 am
by EL1998P71
When I was there on a tour, my guide then said that the one they have now came from the blue island building.
It still had the siren panels mounted on the outside.