In article et, "KD7TOG"
writes:

Thanks all for the ideas ... I have a couple of potential solutions.

Tony, KD7TOG

This isn't a direct solution but it looked interesting if someone wants
to try it - Harry Lythall's accidental discovery of an LM317 series
voltage regulator as an RF oscillator at low HF.

http://w1.859.telia.com/~u85920178/tx/317-tx.htm

Use a toroidal core and/or a multiplying rectifier and the voltage could
be sizeable.

Len Anderson
retired (from regular hours) electronic engineer person