Hi
> On Apr 11, 2018, at 12:11 PM, Graham / KE9H <[email protected]> wrote: > > Phase noise is (usually) more important than absolute frequency accuracy. It’s probably well worth looking into exactly what you are after in terms of phase noise, spurs, and stability *before* deciding on a solution. In some cases things like DDS spurs are a non-issue. In other cases phase noise at certain offsets is a really big deal, but at other offsets … it’s a non-issue. Bob > > I suggest some kind of low phase noise master oscillator (OCXO) feeding a > DDS without an internal multiplier. > > If internal multiplier in DDS, that, rather than the frequency reference > source will set the phase noise floor of the sampling. > > --- Graham > > == > > On Wed, Apr 11, 2018 at 11:00 AM, Jerry Hancock <[email protected]> wrote: > >> For and RSP? I used an HP 3325 locked to my Cs beam and took the signal >> from the back. I think I paid no more than $100 for the 3325a and one I >> got for free. >> >> Regards, >> >> Jerry >> >> >>> On Apr 11, 2018, at 4:49 AM, [email protected] wrote: >>> >>> Leo Bodnar GPSDO - adjustable Low-jitter GPS-locked precision frequency >> reference 400 Hz to 810 MHz . He has a new one, single output for 99 >> british pounds. >>> >>> Jerry NY2KW >>> >>> -----Original Message----- >>> From: time-nuts <[email protected]> On Behalf Of Pete >> Lancashire >>> Sent: Wednesday, April 11, 2018 6:00 AM >>> To: Discussion of precise time and frequency measurement < >> [email protected]> >>> Subject: [time-nuts] suggestions on getting 24 Mhz ? >>> >>> Needed for SDR project as external clock source. >>> >>> -pete >>> _______________________________________________ >>> 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. >>> >>> >>> --- >>> This email has been checked for viruses by Avast antivirus software. >>> https://www.avast.com/antivirus >>> >>> _______________________________________________ >>> 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. >> > _______________________________________________ > 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.
