The British station GBR went QRT in 2003, but you may find an old transmission from this station in morse code in your music archive ! When Mike Oldfield recorded "Tubular Bells" in 1972 and 1973 at The Manor studio, some of the recording equipment wasn't properly shielded, so the CW transmission from GBR was recorded on the master tape - possibly without the audio engineer's knowledge. You can see these these morse code transmissions in the spectrogram or make them audible again (play directly from CD or from a WAVE file, but do not try this with lossy MP3 files - the MP3 compression removes everything above 16 kHz ). There is a predefined configuration for SpecLab named "GBR_CD.USR" which can make the morse code on Tubular Bells audible and visible (16 kHz converted down to 650 Hz, and narrow-band filtered; morse characters are visible on the spectrogram screen).