Hi The spectrum you show in the middle is the correct one. It shows the 10 MHz output and the sub-harmonics related to the 5 MHz crystal oscillator. The other two are a bit broken. One appears to have a stage oscillating. The other is more interesting. It has a stage oscillating that is injection locked to the 5 MHz crystal oscillator. I suspect more than one capacitor went bad in these OCXO's. Somebody may have sold Morion a bad reel of bypass caps.
Bob On Feb 25, 2012, at 4:01 PM, Roberto Barrios <[email protected]> wrote: > Hi all, > > > > I spent this evening repairing a MV89A that had a weak output, output cap > was bad: > > > > http://www.rbarrios.com/projects/MV89A > > > > I also found while comparing with other two MV89A's that they show different > output spectra, as can be seen. Test conditions were identical but one > appears much cleaner than the others. What are the reasons for this? > > > > Regards, > > Roberto EB4EQA > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
