Rick Karlquist wrote: > Lux, Jim (337C) wrote: > >>> impurities. The JHU crystals are apparently in some type of glass >>> enclosure which can take the high temperatures, and the paper seemed to >>> > > The processing temperature is limited by the phase change of the > quartz. Above a certain temperature, it is permananently changed > to another form that is useless for oscillators. Is there any > evidence that these crystals are actually baked out at a higher > temperature than cold weld copper packaged ones? The link to > JHU was broken. > > Rick Karlquist N6RK > try: http://www.jhuapl.edu/areas/nss/fact_sheets/07-00963-uqo.pdf
http://tycho.usno.navy.mil/ptti/ptti2004/paper35.pdf Bruce _______________________________________________ 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.
