The Police and MY Network

[The Annoyed Man]

I've always wondered if putting chicken wire around a room would kill the cell signals.

or steel confetti, or whatever that stuff from ww2 or whatever was.

The house I sold in California was originally built by an electrical engineer at JPL (which was a couple of miles from my house). He built a workshop in the garage, and clad the entire structure in a wrap of flexible metal sheets allegedly to prevent signals coming from outside the structure from interfering with whatever he was doing inside it. We eventually had it stuccoed over.

[WildBill]

The house I sold in California was originally built by an electrical engineer at JPL (which was a couple of miles from my house). He built a workshop in the garage, and clad the entire structure in a wrap of flexible metal sheets allegedly to prevent signals coming from outside the structure from interfering with whatever he was doing inside it.

Are you sure he wasn't trying to keep his signals from getting out of his workshop?

Actually, they have similar rooms at NASA and many DOD facilities where they do EMI [electromagnetic interference] testing. The rooms that I have seen have more that just a mesh screen. They are completely covered in foil, but I it depends on the level of signals you are trying to measure. In fact, my company recently sent some of our new products to JPL for such testing. The tests were part of qualification testing to make sure that they didn't interfere with the Space Shuttle guidance system electronics.

[jimlongley]

I've always wondered if putting chicken wire around a room would kill the cell signals.

or steel confetti, or whatever that stuff from ww2 or whatever was.

Chicken wire is not very effective, partly due to the fact that a variety of wavelengths make it through, and partly due to poor joints at the intersections of the wire - been there played with that.

Chaff was used to fool radar but wouldn't be very effective for shielding a room.

When I worked at Tellabs I used our shielded room a couple of times to run tests on some of my ham radio equipment. Of course it was nice to have the company's RF spectrum analyzers and other such test gear to work with.

That room was used to test equiment that would generate radio frequencies but was not designed to broadcast them, the FCC does not look kindly on interference no matter what the source.

Our room was a tight copper mesh and was grounded to way less than the 5 Ohm standard making it very RF tight and resistant.

[KBCraig]

As said, the mesh in chicken wire is much too coarse. The openings must be smaller than the wavelength of the RF signal in order to have any effect.

What we're talking about here is known as a Faraday cage:

http://en.wikipedia.org/wiki/Faraday_cage

[DoubleJ]

It would be nice if they put them in movie theaters and classrooms.

Yes, then I couldn't go see a movie when I'm "on-call." yes, please add that to the list of things I already can't do every Wednesday, as wells as several weekends a month.

kthxbye

[TexasComputerDude]

It would be nice if they put them in movie theaters and classrooms.

Yes, then I couldn't go see a movie when I'm "on-call." yes, please add that to the list of things I already can't do every Wednesday, as wells as several weekends a month.

kthxbye

LOL you cant go to walmart or anywhere near the bridge to dibol (anyone near lufkin knows what im talking about) then huh? LOL.