Fantastic Forum the Original Art Bell's Midnight in the Desert and Coast to Coast AM Forum

Where you hear about "numbers stations" here is what they are talking about. This video is of a hybrid station with the voice sending the message preamble and the data (sounds like a modem) sending the message.



The Perseus is a wonderful SDR receiver which captures this stuff real good.

wow that was interesting. computer sounds, Mexican women, then dial tone.....