In an earlier posting, I presented a recording that I did of the new Russian satellite Yubileiny, also designated RS-30. I finally found my spectrogram code, and made a picture of the resulting recording. It’s kind of big, but click the thumbnail below if you want to have a peek:

The image consists of 27 spans, each of about 30 seconds. You can see that every five seconds, my program corrects for the doppler shift, perhaps causing a break in the morse line. It’s relatively easy to read the morse code off the resulting image.