I didn't have a pen and paper on hand, but I did try and play it.
I was really enjoying the idea, and I love puzzle games, but tuning the radio was taking waaaay too long, and that kind of caused me to drop off of it. Especially since it took me a good minute to realize how the timing for the button presses worked.
It'd have been better if I could just click on the radio to go to the stations once I found them- which, speaking of clicking. I don't know why clicking wasn't used instead of E.
As for the puzzles themselves, I was sort of stuck and their vagueness made me feel like I'd have to guess for some solutions- in particular the line puzzle, as I didn't know if they repeated. I may try it again later on, but for now, I have to move on to the next game.