XDE Doppler Effect - Unknown Shortwave Test Station

XDE was a strange shortwave radio station that was first seen on January 6th, 2014. It was originally only on 8000 kHz and in USB mode. It soon used many other frequencies and even an AM mode as well. Likely used for testing propagation and transmitters.

Station profile and further explanation:
www.numbers-stations.com/digital/xde/

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