A Green Beret’s Guide to EMP: Practical Steps to Prepare for a “Lights Out” Scenario

Posted: May 8, 2015 in SWIG

Copper and aluminum are the two best metals (in order) to use for your cage structures; however, steel will work.  The main point is you must have a little background knowledge of what is needed.  Maxwell’s equations relevant to a conductor are relevant here.  The efflux (the waves: radio, gamma, etc) originating with an EMP is a broad-banded grouping.  Regarding Maxwell’s equation:  Any resident excess charge whether fixed or time-varying must reside on the conductor’s effective surface; an excess disturbance would flow around a continuous conductor’s surface from one end to the other.  The interior of such a conductor would not experience this flux.

The equation shows that a solid object that can be closed off (such as an ammo can or a metal trash can with tight fitting lid) without gaps can be effectively employed for a Faraday cage.  This also illustrates how a grounding rod would not be needed if the gaps are closed off correctly (or if you are going to enmesh a whole room/structure and the wavelengths are not smaller than the apertures). As I mentioned previously, I’m not a scientist; however, the information is out there and there is no need to “reinvent the wheel.”

There is a rule that I use for myself.  You will have to gauge your budget and availability of equipment to see if you can apply it for your situation.  Here it is:

Rule:  Any electronic equipment should be bought in pairs/two (2) of each, with one out for use and a second in a Faraday Cage.

Full Story @ [SHTFPlan]

Electrical devices plugged into the grid would be most vulnerable as the power surge would travel on those conductors far outside of ground zero. Mobile devices under battery power exposed to line of sight of ground zero could be damaged or jammed until a reboot.

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