[time-nuts] Fundamental limits on performance

[Rick Karlquist]

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