Okay, so don't think I'm a nut for this reply (since it is my first reply to a post).
Your post really caught my attention the other day because a similar thing happens to me.
It started several months ago- maybe 6-8. At random times, on random applicances etc. I get a loud buzzing. I have never heard any type of morse code
or anything. It is a loud constant buzzing that lasts anywhere from 2-10 seconds.
At first I dismissed it as some sort of electrical interference, but due to the variety of places I heard this noise and the variety of circumstances
I don't know what to attribute it to.
I first started hearing this on car speakers (while driving someone else's car)--I thought it was their stereo, I have heard it on my own tv and at a
friend's house on their tv (they had never heard the sound before), I have heard the sound coming from my car radio, the radio in my house and even
lights (I think--nothing else was on at the time). I have never heard anything from my computer.
My car has had MANY bizarre electrical issues that only seem to happen when I am there (my husband drives my car a lot)--lights suddenly flashing, the
key controller not working, random signal lights coming on, and the radio seeming to stop for a second before restarting again, being literally locked
in my car twice (yes, that scared me) and I have had my car gone over and "fixed" three times. It was a blown fuse, or a battery problem or "we
can't find anything wrong". It's a 2006, it's not old.
In most instances my cell phone was on me, but many times it wasn't.
The only thing that came to my mind, and I'm not saying that I'm one of them, is that certain people posses some type of charge that their body
emits that causes electrical things to go haywire when they are around them (lights brightening or going out, electrical interference, etc.).
Another part of me thinks back to lectures I have heard about "spirits" trying to communicate with people.
Then there is the scientist part of me that just wonders how so many electrical interferences could happen, but I'm sure it's possible somehow. We
have so many electronics nowadays, that I'm sure some of them react when put together, but it does make you wonder....
So you are not alone in strange electrical noises