I had to rename the super noisy regen to the Signal Digger Regen. People are very literally minded I guess and the circuit got very low views on pinterest. Anyway the new circuit is a variation at least:
I went with the DrM prompt and changed the RF filtering to C4 as a reduced component choice. It depends on the audio amplifier that follows. For the LM386 that has power gain at 500KHz+ you may need extra filtering at least for the AM broadcast band.