If you like pen and paper cryptography, I've got a one time pads example for you coming up on the next issue.

I've matched my pacing with I think a real Cuban number station and I practiced copying it down. It's legit.

Digital listeners can participate but if you get the tape you get a bonus message.

How to get a tape? You can meet me in Prague for HCPP in early October. I will ask you if you have a cassette player. Answer correctly and truthfully and you will get one.

If you fail the response, you still get a sticker though so don't worry.