[mitchellberry]

Am just an armchair commentator but surely NK already has hardened facilities prepared for an EMP from a nuclear strike?

I don't see how a b52 with a kerosene powered engine is anywhere near capable of delivering that same level of radiation.

[phkahler]

Sounds like they're talking about some newer technology that works at range, but this has been around for a long time:

https://en.wikipedia.org/wiki/Explosively_pumped_flux_compre...

The electrical load (output) can be a high power microwave source, or just blast out a massive EMP.

[johansch]

https://en.wikipedia.org/wiki/Counter-electronics_High_Power...

Seems like the weapon can be put in cruise missiles.

[Someone]

I expect it must be put in something that can bring it close to its target to be effective. O(n²) power drop off for electromagnetic radiation is tough to beat at a distance of kilometers.

[mchahn]

O(n²) power drop off only applies to a spherical emission. Focused power drops of much more slowly.

[Someone]

You can get a way smaller constant, but the area of a cone still drops off as O(n²) with distance. You would need collimination to beat that, and even then, there’s atmospheric dispersion.

[blackflame7000]

I suspect the key is definitely in its focusing mechanism that allows for high powered bursts to be relayed to its target with relative efficiency.