Many of you know the basics of EMP's where your electronic devices will be wiped out and you will be back in the 1800's. But actually if you understand the technical details of an EMP, you might be surprised to find out that some devices will survive. This will make sense when you understand things like the frequencies of the pulse and the resonance of devices. Plus there are ways to be a prepper and be ready for this with as little as $100.