[mikethedruid]

Another thought on the bias cell. There appears to be plenty of room under that chassis to install a single AAA cell holder, which would do the job nicely, last about as long as the shelf life of the battery used, and be easy to find when replacement becomes necessary. I think this radio must have been gone through back in the 1980s or 90s, from the look of the orange drops, and the electrolytics. The orange drops were very good condensers in their day, just a bit grunganous looking when used to replace old paper tubular caps, but that was what was commonly available in a lot of electronics shops for hobby and replacement use back before the internet. Be thankful, fellows, the internet has made the hobby of keeping the old radios alive a lot easier.