FRBs are in fact quite mysterious. It is odd to me that they are no long defined as emissions from pulsars.
Naturally I thing also of how Hitler had his submarines radio Berlin with encoded, accelerated messages. “Blips.” We knew the frequencies and triangulated almost every one!
We lost a lot of “tonnage” but (too many but) not many men.
As a merchant mariner I am quite proud of our ruses. My father was the architect of not a few.
Thank the LORD for Churchill. I have no affection for Roosevelt.
We have been sending radio signals into space since Marconi. Who knows?
Interesting.
Cool about your dad!
When in the 1950s submarine service, a radioman told me that they either sent accelerated messages by having the Morse code recorded and then played back at high speed, cutting down the transmission speed - and chance of detection - by a huge factor. Once received, they had a device that slowed down the recording so they could decipher the code.