classic One-tube regenerative circuit from 1923-24
This poor little fellow was found in very distressed condition and
I intended to use it only for parts. But, since its so simple it
made better sense just to fix it up and get it playing again. I
had to rewind the regeneration coupler and redo the taps. This
one uses more taps than the typical 4-tap Haynes configuration.
Most everything else was basic maintenance. The variocoupler
isn't in the best of condition. Its one of the old hard-rubber
types and has a chunk out of the edge.
It uses a nice tuning capacitor with a variable vernier plate for fine
tuning. The tube is an 01A type and it works pretty well even as
low as the 20 volt range.
I built a little mahogany-toned cabinet for it since it was found sans
cabinet. It turned out to be an attractive little project and
works quite well for a 1-tube circuit.
26 May 2007