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EMP electromagnetic pulse protection

How to protect your electronics from EMP’s

Find out what you can do to protect your valuable electronics without spending a fortune.

Those of us who frequent this web site, the prepper community, prepare for a host of potential crises that may befall our nation.  Some are more likely than others, but most share a common background when it comes to being prepared for them.  The event of an EMP strike, however, requires some very specific knowledge and safeguards.  This is a serious enough issue that a study was commissioned by congress several years ago, which found that the threat was real and that we were woefully unprepared. This essay will provide a brief description of the event itself with some supporting history, discuss the likelihood of such an event occurring, and finally go over the potential impact of an EMP strike with recommendations for preparations.

What is an EMP?

EMP stands for Electro Magnetic Pulse, a powerful burst of electromagnetic radiation that interacts with the Earth’s atmosphere and creates a wave of electrons that travel outward at the speed of light.  This “pulse” lasts only milliseconds, but the magnetic field that it produces creates a powerful electric current in conductive material Image by beltzner via Flickr”    312 Adeladie - 5th floor faraday cage lulwut?
principle.  There are actually three components to an EMP, but only the first, called the E1 wave, is considered a threat.  (The E2 mimics disruption by lightning and is comparatively easy to shield against, and the E3 phase is similar to a solar flare but would typically not reach the ground in a high altitude burst.)

This type of energy occurs naturally in the form of solar flares, but can also be man-made in the form of a nuclear burst.  While a solar event is possible, and strong examples have occurred in the past, it is typically much weaker than a weapon-based pulse, which will be the focus of this article.  EMP energy travels in line-of-sight, so ground bursts actually have much more localized effects.  The most damaging type of strike for EMP production occurs at altitudes of 40-400km above the surface of the Earth, where line of sight extends for thousands of square miles.  At altitudes such as these there is no blast damage, fallout, or even dangerous radiation.  Certainly these are the immediate and disastrous effects of a detonation near the ground, along with the now universally known mushroom cloud.  Why, then, with this kind of damage potential, would someone choose to exploit the EMP effects of a nuclear blast rather than the direct destruction?…More at A Prepper’s Guide to EMP, by Chris C. – SurvivalBlog.com

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