Discussion in 'Videos and Podcasts' started by EA3HSL, Feb 5, 2021.
My suggestion would be encrypted frequency hopping which is typical of Military organisations and such like.
I’ve never seen anything like that! It was hypnotic.
Probably something along these lines:
"More blatant [intruders] are the repeat offenders, such as the “Chinese foghorn” heard by over-the-horizon (OTH) radars on several frequencies in the exclusive Amateur Radio 20-meter allocation, as well as on 15 and 40 meters."
Record it and post for folks who enjoy decoding that stuff!