On 12/1/2014 4:08 PM, Bob Camp wrote:
Others did a similar thing by simply taking production OCXO’s to the limit of their EFC range. That let you do a coarse sort to find some number of “likely” units. Next step was to pop a few of them open and short this or that out to get a reasonable beat note. Numbers in the 10 to 20 Hz range were pretty common. After that a single mixer setup followed by a simple limiter got things good enough to screen the production lots. Bob
I am fairly sure they would have done that if it was workable, to avoid special crystals. One rather huge problem with a 10 Hz beat note is that you are never going to measure ADEV at short (<1 second) sample times that way. Rick N6RK _______________________________________________ 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.
