[nullpage]

University of Twente in the Netherlands has a great websdr[1] running some custom hardware that can tune into pretty much the entire shortwave spectrum. I've spent countless hours tuning in to various European radio stations and broadcasts (you can even pick up the odd number station if you are on the right frequency and get lucky with timing).

[1] http://etgd1.ewi.utwente.nl:8901/

[leesalminen]

This link is pretty famous in some “conspiracy theorist” circles, specifically those interested in “Skyking”.

Skyking is a military radio transmission protocol, believed to be command-and-control in nature. Some believe there to be a correlation between the length of the encoded message/how many times the operator says “Skyking” and the DEFCON level/how close the US is to blowing shit up.

[mpalfrey]

Have used this for number stations in the past. It's great - amazing what you can still find on shortwave.