[time-nuts] Optimal oscillator topology for diffrent frequency range

[KA2WEU at aol.com]

Not quiet, using the crystal also as filter gives much better numbers  ,,,,,
73 de Ulrich N1UL 
 
 
In a message dated 2/6/2017 7:30:33 A.M. Eastern Standard Time,  
richard at karlquist.com writes:

I would  say the 2 stage "Driscoll" oscillator is the
way to go.  I have had  good luck with it up to 100 MHz.
The first stage has the crystal in series  with the
emitter, but is otherwise a grounded emitter stage.
The second  stage is in cascode as a grounded base.
The important operating condition  is that only
the second stage limits.  First publications on
it  were in the early 1970's (search Michael Driscoll).

Rick Karlquist  N6RK

On 2/6/2017 1:06 AM, Yeti Yetos wrote:
> Good  morning,
> What's the optimal  oscillator topology for low phase  noise (low 
frequency
> noise and phase noise floor) for   25Mhz/50Mhz/100Mhz frequency  range.?
>
> Best regards,  Rafal
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