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

[Richard <richard.bown@xxxxxxxxxxxxxxxx>]

Brian Teravskis wrote:
> 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
>>
>>
> 
e=-mail Chris, He's a nice guy and sure to help

Richard

LINRADDARNIL