For those looking to replicate a tube-based radio like this one, [Dan] has made all of the schematics available on his GitHub page.

In fact you wont find a single transistor. This classic regenerative tube radio, modeled after an early 20th century homebrew is complete with schematic and additional photos.

Here is the schematic for the regenerative radio that was designed and built in 2007. I decided on a 1G5 tube, which is normally used for an audio output tube. My initial test showed that this radio, ...