For more about shielding from someone who has spent his career doing electromagnetic shielding, see Donald R.
Also see the new Directory of EMP Protection and Solar Rooftop Products now under development by Don White. A related popular myth is that there is a sharp and well-defined boundary between what is protected from EMP and what is not. Remember that in a complete solar photovoltaic system, the inverters and battery chargers, as well as the solar panels, need to have proper shielding and transient protection. For information about the EMP sensitivity of solar panels, and more details on the shielding of solar panel systems, see Donald J. According to a US Army report from 1994, one single high-altitude detonation has the potential to generate an electromagnetic pulse capable of covering the entire continental United States.
Another emergency protection you can take is unplug a microwave, place your electronic device inside the microwave, and close the door.  The microwave acts much like a Faraday Cage, so that microwaves do not escape while cooking food.


A electrical engineer friend of mine made this comment to me when I asked about EMP’s. One of the scarier survival events that preppers need to be concerned about is an attack involving a High-altitude ElectroMagnetic Pulse, also called HEMP.  All nuclear weapons create EMP, but when detonated high in the atmosphere, the EMP generated is so massive that it can destroy electronics and permanently knock out the power grid across the entire country. However, unlike EMP, a CME event does not destroy electronic devices, unless they happen to be connected to the power grid or long lines that will collect the induced current.  For more on the differences between EMP and CME, you can read about it here. This means that you should be able to easily protect your electronic gear from EMP simply by wrapping it in aluminum foil.  I also found that placing the foil-wrapped radio inside a galvanized steel trash can greatly increased the effectiveness of the shielding. When you wrap your electronic device, it’s important to prevent it from touching the foil. If the device has a removable battery, remove it and store it separately.  The last thing you want is to find out that the batteries leaked and ruined the equipment that you went to so much trouble to protect. I know a guy that insists that simply disconnecting a cars battery will protect the cars computer from an EMP.


An upper atmospheric detonation of a nuclear device basically produces an EMP (actually 3 distinct pulses) that covers a huge range of the EM spectrum.
Because of this, many preppers are interested in EMP protection measures for their electronics. I currently have a spare CB, batt operated radio, 2m handheld & mobile units, FRS radios wrapped in mylar bags I got from the LDS storehouse, wrapped in a layer of bubble wrap, then placed into a large 20mm ammo can.



Faraday's field concept
Online cert programs


Comments

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