[Publius6961]

That video is a classic example of "a little knowlege is a dangerous thing." It would be useful to know what the credentials are for the narrator/builder. What is his occupation or level of useful technical education? e.g. physics, chemistry, electroncs, math, etc.

I am aware of what I don't know, and question using an am/fm radio as a test of an EMP cabinet.

At a minimum, I know that a faraday cage needs to be grounded. And the range of frequencies that do damage to solid state electronics must be clearly understood, as well as the probable distance to a likely EMP pulse source.

I would spend my time better learning about the behavior of EMP and its effect on modern electronics first.

The most critical need under catastrophic conditions is portable reliable two-way communications. A healthy receiver, with no working civil transmitters is just another paperweight. I would certainly protect a few sets of those, together with a generous supply of rechargeable batteries in a proven faraday cage.

Not too many people can build a faraday cage to protect a modern automobile. Or to protect the energy grid or the gasoline supply. Even most solar panel chargers rely on "modern" EMP-sensitive electronics.

[MrB]

Yeah, I’m a EE, and I saw the flaw in the lack of grounding as well.

Really, without some sort of physics lab level of simulator, one can’t know whether his best constructed faraday cage would actually work in the case of an EMP.

He did say that he chose FM because of its close frequency match to EMP frequencies. I don’t know - haven’t studied it so much. EMP is probably near the bottom of my list of “things that are gonna cause the StHTF”.

[dervish]

http://www.youtube.com/watch?feature=endscreen&NR=1&v=GqZmac2Bg5M

Many experts say you do NOT need grounding