Except at very short tau (measurement interval), the Wenzel oscillator ADEV (at least the Ultra Low Noise versions) is nothing to write home about compared to something like a surplus 10811A. Designing for absolute phase noise isn't necessarily consistent with designing for longer term stability.
John ---- ewkeh...@aol.com said the following on 01/28/2009 06:30 AM: > Esa, the answer to your problem is, as I said before, to clean up the > signal, use a high quality oscillator locked to your system with a PLL that > has > the appropriate time constant. The time constant will smooth out the jumps > you > see right now. The question is only which oscillator. A Wenzel was suggested > but in my opinion it is not what you need. I have used a Wenzel because I > wanted the low phase noise when multiplied to 10 Ghz. You would pay for > something > you do not need. I have not seen Allan variance data on them. There are > plenty of oscillators out there at a reasonable price starting with the HP > 10544. > Yes, the 10544 will clean up your present setup and will be at least a 10X > improvement over the LPRO solution. But the most widely available unit is > the > HP 10811 which will do a great job. Depending on how much you want to spend > the FTS 1200, 1000 or 2000 are an option. > Bert WB5MZJ > **************A Good Credit Score is 700 or Above. See yours in just 2 easy > steps! > (http://pr.atwola.com/promoclk/100000075x1215855013x1201028747/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=De > cemailfooterNO62) > _______________________________________________ > 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. _______________________________________________ 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.