EMPs are bullshit.
Friend's dad was part of a group that experimented with neutron bombs. We used to talk about things seventeen year olds shouldn't talk about. Said "yeah, it's pretty easy to lean a reaction towards ionizing radiation but it's still a nuke." And really, if you're going to nuke something, nuke something. The advent of MIRVs meant that the goal wasn't bigger nukes, wasn't fancier nukes, but was smaller nukes that you could loft more of. Nuclear posturing by everyone with nukes has been about "enough that they can't be stopped" pretty much since the Manhattan Project (fun fact - if the war had gone on another couple months we would have had five atomic bombs to drop).
I asked him about EMPs. He looked at me like I was an idiot. Everything you know to be "EMP" is actually orbiting radiation that kills electronics because fallout in orbit doesn't fall.
If you would like to avoid the effects of an electromagnetic pulse, avoid nuclear shooting wars. Because lemme tell ya - the occasional frizzle of a circuitboard here or there is nothin' compared to a 100kT airburst.