Eddie: I give 3-2 odds Iran and North Korea both have EMP weapons already.
For North Korea that is true, because they have stated it and tested a nuclear weapon. For Iran it is not true. Even the National Intelligence Estimates in 2007 and 2011 admitted as much, and the "nuclear weapons program before 2004" part is probably not true. They have nuclear power and have been refused fuel rod replacements by US and by Argentina (through US coersion), so they decided to do 3.6% enrichment to be self-sufficient. All this is allowed under the NPT agreement. They have IAEA inspections, and allowed extra inspections when the Additional Protocols were in force. When they abandoned the Additional Protocols, because the US was blocking further multi-party talks, the US said they couldn't abandon the Additional Protocols, and then declared them to be in contravention. Nobody else agrees, obviously.
I know it's a long away from home and therefore boring, but not concentrating on the facts mean drinking the koolaid, which you have, hence the above quoted US-propaganda lie, along with all the others.
All nuclear weapons produce EMPs when used above 25 kms (mid-stratosphere). The frequency spectrum of the interference is divided into 3 according to the type of damage produced. E1 is very fast (< 1 microsecond) and will fry electronic chips in computers and phones and cars and industrial control systems. E2 is slower (<1 millisecond) and can be intercepted and avoided by surge protectors. E3 is very slow (> 1 second) and affects long power lines and fences. Solar storms can only produce E3. Solid Faraday cages will protect your items if they are in it when it happens. Copper mesh of very fine size (< 1mm) might also work if no cables go in or out. Non-nuclear EMP weapons are very weak by comparison and need to be highly targeted.
should work. It is pretty silly to bother with Faraday Cages as there won't be any power or internet services afterwards
Just noticed this one from several days back. I'm responding to it for one reason, and that reason is that it's a fine example of your prejudice and passive-aggressive behavior toward me, and your stunning rudeness.
For Iran it is not true. Even the National Intelligence Estimates in 2007 and 2011 admitted as much, and the "nuclear weapons program before 2004" part is probably not true. They have nuclear power and have been refused fuel rod replacements by US and by Argentina (through US coersion), so they decided to do 3.6% enrichment to be self-sufficient. All this is allowed under the NPT agreement. They have IAEA inspections, and allowed extra inspections when the Additional Protocols were in force. When they abandoned the Additional Protocols, because the US was blocking further multi-party talks, the US said they couldn't abandon the Additional Protocols, and then declared them to be in contravention. Nobody else agrees, obviously.
I know it's a long away from home and therefore boring, but not concentrating on the facts mean drinking the koolaid, which you have, hence the above quoted US-propaganda lie, along with all the others.That last part is very typical of your tendency to act like a douchebag any time I say things you don't happen to like or agree with. In fact lately it's pretty much ANYTHING I say.
You jump to the conclusion that you know something technical about EMP effects that the rest of us, including myself, don't know, because we lack your deep understanding of physics and mathematics. Then you proceed to lecture us, as if we didn't read nearly all the same things, and as if you're an expert, which you aren't.
I've read most of the best book that exists about EMP, and I posted a link to it here. I have it somewhere.

People should make Faraday cages, at least small ones, and use them to store communications devices like conventional two-way radios that run off batteries. Even if you don't have transmit capability, the ability to listen to short wave radio could be worth a lot if there were such an event.
And your assumption that I'm not aware that Iran has allowed inspections of its nukes because it's "far way" (or maybe because I'm stupid?) is just your hatred for Americans coming out again. Its always there, right under the surface, waiting to bubble up. You conflate America the country with America the empire. You don't like American people because we live in a country with huge military and bad foreign policy. You only want to be friends with Americans you regard as proper activists who are out on the front lines of resistance. Never mind you yourself are a hermit who lives alone in a house in an Asian jungle, doing nothing at all.
( Feigned assumption I should say, because much of your pedantic lecturing is deliberate shit-talking and not some attempt to actually inform me or anybody else. You're getting your jollies, I get that, Mr. I-never-insult-people-or-use-bad-language.)
I'm aware that Iran allows inspections. I just don't regard UN inspections as conclusive proof of anything. You are the one who drinks the kool-aid. You are VERY predisposed to take any factoid presented by any country you regard as "anti-US imperialism" at face value. I'm skeptical of them, just like I'm skeptical of everybody else, including the USMIC.
I do not take Iran at face value. I don't regard UN weapons inspectors as infallible. I say maybe they're right. Inspections are good, as far as they go. US policy on Iran sucks. I am highly critical of just about ALL US foreign policy, but that isn't good enough for you and your extreme anti-American self-righteous POV.
Okay, now. Post another diatribe just like all the rest. You have more time than I do. I have a life, a job, a family, friends who speak my language, patients to take care of, and a long to-do list. You will no doubt get the last word in. Your ability to type exhaustively is not in question.