No way to detect any of this?
If it's the modified radar, one would have
to be right there at the time and place. That's
kind of difficult to do, especially when the
assaults happen in different places and at
different times.
Making detection more difficult is that it is
very likely the perpetrators have the target
under observation, and can simply shut down
when the perps become aware detection
efforts are happening.
(Targets reporting the same experiences as
Havana Syndrome also report being shadowed
and having their homes/apartments entered
when away, so it could well be that trying to
keep the perps from knowing detection
attempts are in progress is difficult.)
If someone trying to detect such signals can
actually get a piece of equipment into such a
beam, detection would be relatively easy,
especially for audible transmissions. An AM
radio on empty spectrum space would probably
be able to detect audible pulsed microwave
signals. Even a stereo system may be able.
"Silent Sound" transmissions would be more
difficult since what is heard from those signals
is a high pitched whine, which can be very faint.
Such transmissions don't sound like voice, they
just sound like some kind of random electronic
tone. But even there, effective detection equip-
ment is not particularly sophisticated if someone
were really serious about detection.
Of course, the word "serious" above points up
the possibility that for some reason, those
named to "investigate" may not be serious at
all, and the "We don't know what's causing
this" conclusion may actually have been decided
before the "investigation" was started.
And finally, we really don't know if pulsed
microwave is responsible.
More recently, the technique was demonstrated
using a pulsed laser. That one can't get through
walls, though.
It's quite possible there are yet other methods.
-- Squirrel