Many of our members are not licensed radio amateurs. However, you don’t need a license to listen to the shortwave bands, if you have a radio with those bands and a simple long wire antenna. Following is information about stations you can listen to (depending on ionospheric conditions) and how to find them.
Finding Stations:
SWLing Station Lists
CC Crane's Station List
Decoding Maritime RTTY Weather Broadcasts
Shortwave Radio Archive - a fascinating sound file collection of shortwave broadcasts from various countries.
MYSTERIOUS SHORTWAVE STATIONS
Numbers Stations: clandestine short wave radio stations of unknown origin and use
Numbers Stations (Wikipedia)
List of Numbers Stations
The Conet Project: In 1992 an Englishman, Akin Fernandez, started to record numbers stations. He eventually recorded many of them and created a 5 CD set. The recordings are available on SoundCloud.
RUSSIAN WOODPECKER - an over the horizon early warning radar that transmitted in the HF (short wave) bands during the Cold War.
Here is a YouTube video about the Russian Woodpecker
Here is an article about the Russian Woodpecker
Additional Information about Over the Horizon (OTH) Radar:
Duga 3 explanation
Duga 3 sound
Duga 3 video