Hi More than the cut, the packaging, resonator design, mount design, and processing of the crystal (in no particular order ) are what really make this or that crystal suitable for use in a precision OCXO. You can indeed find AT cut OCXO’s that do pretty well once they warm up ….
One wonders what the result would be of doing a large blank (> 50mm) 2.5 MHz 5th OT using modern design, packaging and mounting techniques. Given that it would take a rather large pile of nickels to find out (like > $50M worth), I very much doubt we ever will know the answer. Bob > On Feb 29, 2020, at 1:05 PM, John Moran, Scawby Design > <[email protected]> wrote: > > Since the poor old SC cut crystal has been given such a kicking for its > inconvenient placement of spurious responses, is there a better, or BEST > crystal for putting in an oven and turning into a nice reference? > > John > > Cheers - John > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
