As many as 200 Americans have now reported possible symptoms of 'Havana Syndrome'

https://news.yahoo.com/many-200-americans-now-reported-083000770.html Almost half of those reporting symptoms are linked to the CIA, say officials, with possible cases in Berlin and Vienna and on every continent but Antarctica._--__-------- Jim Bell's comment follows. Given how easy it should be to do an audio or radio/microwave spectrum analysis, using a SDR and smartphone, I'm surprised this is still so mysterious.