“Incredibly simple compared to a typical SSTC”: a 25 V transformer, a 12 V regulator, and a single gate-driver chip acting as comparator, amplifier and driver at once, fed by an antenna. A push button injects the first pulse. Nine years later this is the circuit loneoceans' SSTC 1 descends from, through Rob Bryon's version of it.
Schematics and photos

Micro SSTC · 107 0719 
Micro SSTC · 107 0720 
Micro SSTC · 107 0726 
Micro SSTC · 107 0732 
Micro SSTC · 107 0737 
Micro SSTC · 107 0742 
Micro SSTC · 107 0743 
Micro SSTC · 107 0746 
Micro SSTC · 107 0749 
Micro SSTC · Micro SSTCschematic 
Micro SSTC · Micro SSTCschematic 2
Sources
This is the card from the driver tree, written from what the builder published. Send corrections through the forum.