Hi The interesting thing about cross correlation sources is that they don't need to be tuned. A fixed frequency device works just as well as one that's at exactly this or that frequency. There are a number of issues that creep into an OCXO based on the need to tune it. Simply put - the more stuff in the circuit the less likely it is to be quiet and stable. A source designed solely as a cross correlation reference *might* well do significantly better than a tuned OCXO. Bob On Dec 9, 2012, at 11:53 AM, Magnus Danielson <magnus@rubidium.dyndns.org> wrote: > On 09/19/2012 08:15 PM, Tom Knox wrote: >> >> Hi Bob; >> Actually a pair of each so you can cross-correlate against your DUT. I think for us Time-Nuts this is the system that differentiates it from a hobby and a disease. > > Oh, that is what I do with mine when I get a chance to... :) > > Cheers, > Magnus - incurable? :) > > _______________________________________________ > 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.