Valve Crystal Oscillator Grid Current

[Skywave]

Thanks for that Al, I'm glad you did the maths not me, I hope I didn't put anyone to too much trouble on this as it is not a circuit I chose to use in the end.
John

No trouble at all, John. The maths required only a bit of basic arithmetic and as for the questions arising from this topic, its gave me the opportunity to start thinking about a common and elementary building block in vintage radio that, until know, I've largely taken for granted.

Al.