Hi
> On Jul 11, 2019, at 9:37 AM, Leo Bodnar <l...@leobodnar.com> wrote: > >> Well part of it comes from designing, testing, and manufacturing a few >> thousand OCXO designs over the years. We likely built 10’s of millions of >> OCXO’s over the time I was doing / managing that. > It might be just my personal opinion but credential swinging is better left > out of technical discussion. >>> - high-Q crystals require SC-cut >> ... An SC has a lower Q than an AT of similar size >> and design up to the point acoustic Q losses completely take over. >> If you are talking about sub 20 MHz OCXO’s with “doable” crystal >> package sizes, the AT will have the higher Q by a significant margin. > > Could you please back up this claim with verifiable facts? Order up a few 5 MHz 3rd overtones in HC-40 packages and see what you get. You also could send in an RFQ for a batch of each to any of the people who make them and see what comes back. Bob > > Leo > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.