Your solid state devices will either be really light-weight or will have
significantly higher capacitances than the tubes, so it would be very
difficult to get your oscillator to track.

I've got an RF-1 which I've contemplated upgrading. Before I went to solid
state I'd give the filaments a regulated supply (like budgie's post) _and_
put in a regulated plate supply. A solid-state wideband buffer would
probably be a quite good idea; a 0-50MHz broad-band amp into 50 ohms should
be fairly easy.

"Bill Meara" wrote in message
om...
I have an old Heath SG-6 signal generator. It uses two triodes.
I'd like to convert it to solid state. The switched coils, varible cap
and dial mechanism are very nice. Any suggestions on what kind of
oscillator circuit I should use? I imagine the difficult part will
be coming up with a feedback circuit that will cover the 160 kHz to 50
Mhz.
Any ideas? Has anyone seen any articles on this kind of conversion?
By going solid state and adding a few buffer stages I'm hoping I could
make
this thing a lot more stable. 73 Bill M0HBR CU2JL N2CQR
http://planeta.clix.pt/n2cqr