Good morning, the AT Cut is inherently noisier then the SC cut but the SC has some spurious resonances modes. Measurements below 1 Hz are very tricky as the oscillator must be (more or less) insulated from hum, infrared (heater) . Here I am still struggling . Ulrich N1UL In a message dated 7/17/2015 9:59:55 P.M. Eastern Daylight Time, n1...@dartmouth.edu writes:
He doesn't mention that that crystal is used in New Horizons: http://www.bliley.com/products/crystals-precision-standard/vacuum-sealed/ Nice. I have a similar crystal from Valpey-Fischer, 5 MHz 5th overtone AT-cut (as opposed to your 3rd overtone SC-cut). I would be interested in what you would use for an oscillator circuit. David N1HAC On 7/17/15 4:27 PM, paul swed wrote: > Ulrich, > Nice picture. What are you doing with the crystal? I have several older > crystals that are nice but have never done anything with them. > Regards > Paul > WB8TSL > > On Thu, Jul 16, 2015 at 6:02 PM, KA2WEU--- via time-nuts <time-nuts@febo.com >> wrote: >> >> I am working with this ...... amazing device, Ulrich N1UL >> _______________________________________________ >> 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. >> > _______________________________________________ > 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. _______________________________________________ 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. _______________________________________________ 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.
