I found this really strange radio signal when I was shortwave listening at 6765khz LSB last night, it creeped the fuck out of me.
Anyone care to explain?
The low pich sound that go on and off, sounds like a cargo ships alram going.
at 40- 50 (seconds) in the file you can nearly hear seagulls, proof that a ship is broadcasting this message.
To my recollection ubv 76 has never transmitted a morse code. One could assume that either it's an urgent message or one of low priority. Still though, number stations usually transmit on in coded cypher. Would be awesome if someone could decode that.
Saying something about "kilohertz", usually number stations are supposed to be a bit more esoteric. But it's Vietnam, maybe being too hard on the nose is how they roll for "intelligence" work.
Sounds like a number station to me op, i haven't heard those in a while