I have had this since I was in grade school. Going through my stuff now that I am retired.
These forums have a lot of people intelligent in more areas than I.
I see 2 outputs with an output transformer, two pads marked B+ and B-, an IC marked CD4009AE and RCA 435 which crosses to a CMOS hex buffer/converter. The other chip is marked NS440 and L311-1
I kept this all these years for a reason.
The solder job looks amateurish, and I don’t remember building it.