Re: [linrad] Need circuit for 122 MHz crystal oscillator

[Brian Teravskis <Brian@xxxxxxxxxxxxxxxx]

I too have been looking at a low phase noise crystal oscillators around 100 
MHz for use in a Tayloe Detector design for a 50 MHz DC receiver. I was 
going to use a circuit found in QEX (90 MHz oscillator for a 6 meter 
transverter, Sept, 1995, page 27), but have been questioning this choice 
with the interesting reference below and the following reference:

http://www.ieee-uffc.org/freqcontrol/tutorials/FCS%20Tutorials%2000/Driscoll%20html/Driscoll_files/frame.htm

The article by Chris Bartram referenced below has a diagram of a Driscoll 
Oscillator, but it is unreadable. Does anyone have a better copy of this 
diagram?

Regards,

Brian

At 09:10 AM 6/20/2004 +0100, you wrote:
> KJ7F wrote:
> > Gang,
> >    I am considering buying the Time Machine for use with my 432 to 28 
> > Mhz transverter for EME and Linrad.   I want to get the daughter board 
> > to use with it.   That means that I need to make a 112 MHz crystal 
> > oscillator to use the Time Machine with the 28 MHz output of my 
> > transverter.   Does any one have a suggestion for a good circuit for a 
> > 112 MHz crystal oscillator using a 5th or 7th overtone crystal?   Of 
> > course a low phase noise design would be best.
> > Terry KJ7F
> Terry have a look at this link, it may help.
>
> http://www.chris-bartram.co.uk/Martlesham%20Presentation.htm
>
> Richard
--
Brian K. Teravskis            Brian@xxxxxxxxxxxx
ARS K0IK
Apple Valley, MN



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