Regenerative Receiver Using Type 32 & 30 Tubes
Channel: snarfusmaximus
Date: 02/06/2012

NOTE: YouTube mangled the audio, although it was there before. Rather than re-upload, I'll be doing a better remake.

A broadcast band regenerative receiver I built using a type 32 tetrode as the detector and a type 30 triode as the audio amplifier. The tuning capaciitor probably dates from the 1930's, as does the green antenna/tuning coil. It worked the first time I powered it up although I modified it slightly in order to cover a wider part of the broadcast band, and provided some negative grid bias on the triode to reduce distortion.

If you're interested, I drew up a schematic:

http://www.chookfest.net/vk3naf/img/Regen3230.png

Update - I have found the origin of the tuning coil, it dates back to the mid 1920's:

http://www.youtube.com/watch?v=NbckZcAafzQ