I keep reading this story but I have not seen any offical attempt to use pressure sensors, low and high frequency microphones, and em spectrum analyzers to trace what this alledged effect is being transmitted by.
If they did that, they’re not going to talk about it if they couldn’t figure it out. The US government is not going to announce that they took a billion dollars of their best equipment down to Havana and still can’t figure out what’s going on.
It shouldn't take millions of dollars worth of gear to rule out the above possiblities. If not sonic or EM then what could it be?
Wouldn't be surprised if someone has determined the cause and just hasn't publicized it.. There were some comments on an older ars technica article which I thought made a pretty good case for EM.