That almost answers your own question. If that's what it was, it probably would have been detected as such by now. Maybe that was your point, in which case I co

That almost answers your own question. If that's what it was, it probably would have been detected as such by now. Maybe that was your point, in which case I completely agree. An SDR should be able to pick something like that up, since they are adept at finding all sorts of other signals on different bands. Surely the government have better / more powerful SDR equipment than you can already get for Raspberry Pi. The levels needed to cause the reported "concussion-like" brain damage would be hard to miss on a "military grade" frequency sweep. I personally don't believe it has anything to do with waves of any sort. I don't know what it is, but I still am not at a point I could rule out mass hysteria compounded by prior underlying issues with symptoms being compounded through stress and jet lag.