> > sorry for the OT, but the electronic expertise of the group is > too good :-) > > I'm looking for ideas and directions (articles and so on) to realize > very good phase noise xtal oscillator, in the range 20-50 MHz for high > performance frequency conversion. I would like to understand what > circuits can be realized (not requiring too much professional and > modern equipment, test eq. from the 70s-80s is ok) and what is the > contribution of the active oscillator device, the xtal itself and the > following buffers. > Another idea that came on my mind was using digital oscillator (square > wave, cmos) and then filtering for sine output, if this makes sense > for a low PN point of view. > Is there any way to measure the close-in PN of oscillators with an > amateur setup?
A couple of good links from someone who faced a similar problem: http://www.xs4all.nl/~martein/pa3ake/hmode/ http://www.xs4all.nl/~martein/pa3ake/hmode/dds_pmnoise_pll.html Also see the links in the last FAQ entry at http://www.ke5fx.com/gpib/faq.htm . -- john, KE5FX _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.