Posted: 3/30/2007 8:48:08 PM EDT
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I am going to buy a new solar radio soon, and was wondering, if there was an EMP, would this wave of energy fry my radio or flashlight (which I only bought for such an occasion)? I was thinkin,(scary, I know) what if I were to put things such as my Walkie Talkie set, solar radio, and (shakeable) flashlight in a steel ammo box, would this shield these things? Or do these types of electronics have a succeptability to EMP attack? Thanx for the info ahead of time. D. |
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www.google.com/search?q=emp+effects Or to stay in our own little sand box: www.google.com/search?q=emp+effects+site%3Aar15.com Or in a less-than-polite manner: JustFuckingGoogleIt.com |
None of that answers, A) Whether it will fry an unplugged radio, B) Whether an ammo box will protect it. |
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There are two basic ways to protect or harden items against EMP effects. The first method is metallic shielding. Shields are made of a continuous piece of metal such as steel or copper. A metal enclosure generally does not fully shield the interior because of the small holes that are likely to exist. Therefore, this type of shielding often contains additional elements to create the barrier. Commonly, only a fraction of a millimeter of a metal is needed to supply adequate protection. This shield must completely surround the item to be hardened. Sounds like you need to weld the box shut. |
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An electromagnetic pulse is a highly dynamic force that have many, many major variables. Things as distance from the POI and the inductive properties of the item in question come to mind right away. Just because an event is classified as an EMP dose not mean that it will have all of the same properties of another event classified as an EMP. The simple answer is that there is NO WAY for you to know if you are protected from an EMP without an applied physics lab studying a specific item in relation to a specific type of EMP. ARJedi (an EE and very smart guy when it comes to this) said it best with his wave and boat analogy. If I can find it I'll post it. Just remember that no matter how well you think you are shielded from an EMP there is no way (short of that above physics lab) to tell how the wave will affect you. LTC Jedi???........help. |
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Best way to propare for the EMP efects of a nuke, it to make sure none of the things you are gonna rely on can be fried by said EMP. You could build faraday boxes for small 2 way radios, weather radios, or GPS's. But will it be worth it? Your 2 way radios will come in usefull because your family can keep in touch, But probably nobody else within range of your radios will heave had the foresite to protect thier radios and they wont pick up military frequencies as they are encripted. But say a weather radio, what goods it gonna be? Cause the stations that broadcast on it are probablygona be fried. Maybe a GPS, but your chancing on the statalites it uses not getting fried, but if you have room in one I would say throw it in there. I dont know how accurate this is, But I have read in a couple of articles that a large EMP in the atmosphere over the US would knock the whole country out. I am going to be building some faraday boxes pretty soon, mostly because I have access to the stuff to build them, and really nothing better to do when I have down time at work. Some things that I plan on building boxes for are 2 way radios, for comm with my family and anyone else I decide to take on, there are a few people in my neighborhood that were in the marines. An international radio, our are probably gonne be fried, But maybe I can get some info from europe as to what has happened. and I will probably use the one for the radios to store my GPS, just incase the sats still work. A couple other things I may build one for are my laptop, and my wifes PSP, these would be fashioned to look more like regular carrying cases with handles. I know I wont have internet. But just incase some military unit rolled into town and had need for one for some govvie internet that was still up, It would put me in their graces, and the PSP would keep the kids happy. |
i disagree. two of the linked pages discuss EXACTLY (A) and (B) above. (A) www.ar15.com/forums/topic.html?b=1&f=123&t=521338&page=2 (B) www.ar15.com/forums/topic.html?b=1&f=123&t=492699 and finally, in www.ar15.com/forums/topic.html?b=1&f=123&t=521338&page=3 RjSteed provides a nice little list of external links where you can learn some more. ar-jedi |
about halfway down www.ar15.com/forums/topic.html?b=1&f=123&t=521338&page=3 ps: don't get distracted by the brunettes. i always do and i wrote it! ar-jedi |
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This is the best answer I have yet seen on the SF. ARJedi posted a while back. READ THIS AND LEARN!
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The only way to find out if a specific nuke will fry your specific electronics would be to try it out by detonating that weapon at the expected location and see what happens. If your electronics survive, then you're ok. If not, try better shielding, get another nuke and repeat the process. In other words, there are a LOT of unknowns with EMP. What they do know is that keeping the antennas disconnected when they're not in use helps, and a Faraday Cage seems to be a good idea, too. |
Perfect..... Thanx.... D. |