One of the items I picked up was this up this ancient homebrew crystal radio from Tom (Electronic M), and found out that it was made from plans released from the US Bureau of Standards in 1922.
After a few hours of guesswork and research followed by understanding how it works, I installed a 1N4001 diode in place of the missing crystal detector and BOOM! I'm listening to Lou Rawls on a 95 year old radio with no power source!!!
