SDR File Analyzer: Taking a closer look at 1710 kHz

A big thanks to Simon at for his release and continual tweaking of a useful tool that comes bundled with the V2 suite known as the SDR File Analyzer (for 64 bit Windows machines only).  Here’s a spectrogram showing a variety of AM signals present over a course of 6-1/2 hours on 1710 kHz New Year’s Eve 2012 generated by feeding my Perseus .wav files into the File Analyzer tool.  The strong AM carrier in the center belongs to The Big Q which signed off between 1030-1100 UTC.  The moment of sign-off is quite obvious on the image....

Pirate radio meets Digital Radio Mondiale (DRM)

It was bound to happen at some point with pirates now pushing the technological envelope.  First, Red Hat from X-FM Shortwave experimenting with C-QUAM AM Stereo broadcasts on shortwave, and now with Undercover Radio dabbling with Digital Radio Mondiale.  Obviously this isn’t practical for a number of reasons as demonstrated in the video below, but it’s great to see pirates experimenting with new modes and proves that DRM isn’t just reserved for the big 100kw broadcasters. [youtube=]