Interesting patterns

Doing a bit more snooping around the radio spectrum with the RTLSDR (My HackRF should be here tomorrow!) I spotted these patterns in the transmitted signals from DAB stations. I’m fairly sure these are not just moiré patterns. I expect they probably tell you something about the multiplexing of the signals in the transmission.

Running

I’ve always enjoyed a good run, but somehow got out of the habit between the ages of 14 and 25ish. Then got back into it in a not very serious way. Now I try to run 2 to 3 times per week – usually in my work lunch hour (and a bit). I’ve been running …