On Thu, Oct 14, 2010 at 5:43 AM, Jason W6IEE <w6iee...
> Arnie, Both Steve and I pored through SSDRA, and neither of us found a
> Hartley-based VFO that didn't use FETS... anywhere else we could look
> that would have a similar circuit?
> Or, would would be our next best alternative for the VFO, factoring in
> the best mix of simplicity and stability?
I don' t have SSDRA or EMRFD, yet. My experience is a bit limited, so
I started with a Pixie ][ and used its crystal controlled oscillator
for most other projects, receivers mostly.
Its usually implemented with a 2N2222 or a BC548 or 2N3904.
Its stable enough when used with a voltage regulator and encased in an
inch of polystyrene foam. What we in VK call an esky, perhaps what you
would call a cooler.
"Art without engineering is dreaming; engineering without art is