[time-nuts] GPSDO project

GandalfG8 at aol.com GandalfG8 at aol.com
Sun Jun 28 16:00:43 EDT 2009

In a message dated 28/06/2009 20:34:25 GMT Daylight Time, brad at braddye.com  

I have  just purchased a Thunderbolt GPS receiver. I hope to use this  
to  discipline an oscillator on 66.66666 MHz so I can use it as a LO on   
my Software Defined Receiver (SDR-IQ).

Building such an oscillator  is a little over my head so I thought I  
would ask the group if  anyone knows where I could buy the missing link  
of this project. I  have put a drawing of my project on the web showing  
the specs of  what I need. The oscillator is shown in the blue box.

Any help or  suggestions would be greatly  appreciated.


One option, although perhaps a bit bulky as it's a 3U 19inch rackmount  
unit, would be to use something like a PTS160 synthesiser,  or Wavetek  5120A 
which is similar, which can be driven by an external 10MHz  reference and can 
provide outputs between 100KHz and 160MHz with resolution  as fine as 0.1Hz 
depending on number of incremental modules  fitted.

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