I didn’t study analog design too closely in school, but I understand that the superheterodyne technique for frequency mixing can be used to do some rather interesting things, such as taking the difference between two high frequency signals. Some things are easier to do at high frequency and then brought down to audible frequency, I imagine.

Alternatively, a synth for dogs haha

Nice! I haven’t played around with analog stuff as much as I would like, but I’m curious what was the impetus for building this oscillator? Are you doing electronic synth stuff?

What I like about this design is that if wind was an issue, it would be the simplest thing to fill the base with sand to anchor it down, without it being permanent, and without impacting its basic functionality. Brilliant and versatile!

It took me a few brain cycles to recognize that this was a spoon. Perhaps others were similarly momentarily confused.