The 1938 Radio Handbook (page 301) has a Reinartz Crystal Oscillator which
uses an 802 tube. It features a tuned cathode circuit at 1/2 the frequency
of the crystal. In that circuit, keying is in the screen. It featured low
crystal current and high efficiency. Reinartz never minded re-inventing the
wheel to get improvements.

I think there may have been a modern version transmitter in one of the CQ
magazines using an 802, but details are real fuzzy.

Remember to put the rig on the air - it needs exercise.

73, Colin K7FM