Hi An equally important part of this:
What are you driving with this OCXO and what is it’s measured noise floor at 1 Hz (or 10 Hz or what ever ….). In some cases a “crazy” OCXO is actually quieter than the device it is driving. That means that the last 5 or 10 db in phase noise improvement really has zero impact on the system performance. I’ve run into this a *lot* of times over the years. Bob > On Jan 10, 2022, at 12:07 PM, Norman Reitz via time-nuts > <[email protected]> wrote: > > Hi Stefan, > Bernd said it allready. If you once notice the result of a "better" clock > with lower phase noise, you dont want to miss it anymore. Even if there is a > lot of vodoo and pseudo-sciences in the audio sector - and audio-nuts can > talk hours about things no scientist ever heard about. But the improvement > of phase noise is not an imagination. We are not talking about making > something just "work". > In worst case, phase noise can lead to bit errors. better/lower phase noise > clocks will produce a better musical flow, better dynamics, better > representation of details and details that were notbeeing noticed before. And > don't forget - the quality of the power supply is not entirely unimportant ;-) > kind regards > Norman > Am Montag, 10. Januar 2022, 15:52:59 MEZ hat Stefan Heinzmann > <[email protected]> Folgendes geschrieben: > > I'm curious, too, what kind of audio application requires this level of > phase noise performance, and why. > > Cheers > Stefan > > Am 10.01.2022 um 12:35 schrieb Attila Kinali: >> On Mon, 10 Jan 2022 08:26:26 +0000 (UTC) >> Norman Reitz via time-nuts <[email protected]> wrote: >> >>> I am looking for suppliers of high-quality OCXO in 10 Mhz (sine / square) >>> and 25 Mhz sine wave output. >> >> Try contacting Bernd Neubig at Axtal. He is a fellow time-nut and likely to >> be >> open to supply you with what you need. >> >> That said, are yo sure you need such stringend phase noise requirements? >> It's audio. Nobody is going to hear whether the noise is -60dBc or -80dBc @ >> 1Hz, >> much less -120dBc. As you have noticed, what you want is not readily >> available. >> There are only a handful OCXO available that reach that level. One of them is >> the famous Oscilloquartz 8607 and its successor the Rakon HSO13/HSO14. But >> be prepared >> to pay the price of a small car for each of them. And there is the NEL ULPN >> OCXO 1714a, >> but I don't know how much that one costs. >> >> >> Attila Kinali >> > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
