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ki4SGU :: ok lets cll checken wire

WB4MAK :: http://en.wikipedia.org/w...iki/Faraday_Cage

ki4SGU :: thanks

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WB4MAK :: Coaxial cables are in fact data cables wrapped by a hollow, flexible conductor, effectively a Faraday cage.

W2FMU :: Some coax is 85% some is 90% some is 95% - higher is usually better

W2FMU :: % shield that is

KJ4CUS:Joh :: Guest 2238 enter your call sign in the bottom lft field and click say

W4QO.jim :: INFO ON TOROID TYPES

W4QO.jim :: I'll see Jim Kortge K8IGY on Thursday so I'll ask him

ki4SGU :: I'm sorry ... hi hi

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KJ4BTB :: I think the spacing and size of the holes was significant

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W4QO.jim :: hello KJ4BTB

W4QO.jim :: and K4YJI

ki4SGU :: Does Jim Kortge live in the area... I'm a fan

W2FMU :: Several factors serve to limit the shielding capability of real RF shields. One is that, due to the electrical resistance of the conductor, the excited field does not completely cancel the incident field. Also, most conductors exhibit a ferromagnetic response to low-frequency magnetic fields, so that such fields are not fully attenuated by the conductor. Any holes in the shield force current to flow around them, so that fields passing through the holes do not excite opposing electromagnetic fields. These effects reduce the field-reflecting capability of the shield.

KJ4BTB :: HI Jim I was listening in - not sure if I was heard over the net

WB4MAK :: kj4btb ... I have you checked in

WK4U _ Tim :: nite all

W4QO.jim :: guest 2238 can you tell us who you are?

WB4MAK :: good night

W4QO.jim :: just hit SAY a couple times

W4QO.jim :: w2fmu, what kind of wx instrumentation do you have that can put all that on your web site?

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k4bb :: so long

k4bb :: A Faraday cage is capable of completely stopping an attack using electromagnetism such as an EMP.[

k4bb :: v

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W4QO.jim :: d

Tuesday, 13 May 2008

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