Quote History Quoted:
Not really, there are better/legit reasons like theft/fire/water etc though.
View Quote
Whether or not I agree with the preppers though, if they have legitimate questions about technology, I still try to answer their questions with reasonable answers. Just because they are not my fears, does not mean that I don't respect the fears of others.
Fire is a great reason to have something in a safe though, you are correct. At least, assuming it's a fireproof safe. I doubt the housings would hold up to a housefire, but the tubes might survive.
Still, technology is kind of fragile. I've been working with technology for years, and it's difficult to predict. Older stuff was more capable of dealing with EMI, but not electric sparks. Newer stuff seems great with sparks, but less capable of dealing with EMI. There's an emerging series of countermeasure systems that doesn't use EMPs but can stop drones and most vehicles in their tracks from a distance, and it can usually get through shielding too. At a distance as well, and it doesn't have anywhere near the power of an EMP - not even within a couple of order of magnitude.
That company is E2V BTW... They have some cool radio guns, but it's pretty big and weighs 350kg. Still, I wonder how night vision would be affected by such a beam as a countermeasure, since the principle is the same.
https://www.theengineer.co.uk/issues/october-digital-edition-2/radio-beam-device-can-disable-car-and-boat-engines-from-50m/
Some modern electronics have been hardened. Other parts are more susceptible than before. I doubt they've even checked off the components in most tube PSUs, or even tested them against modern countermeasures yet for that matter.
I'm not trying to disagree with anything you've said - I think the level of research you've already done is pretty amazing and you've pulled me along for the ride. I'm just not that confident that generic non-shielded tubes wouldn't be affected by low-level EMP.
David.