[time-nuts] quartz / liquid nitrogen

Brooke Clarke brooke at pacific.net
Mon Apr 2 17:11:18 EDT 2018


Hi Tom:

Put the dry ice in acetone to the lowest temp.

-- 
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

-------- Original Message --------
> Has anyone tried running a quartz oscillator at liquid nitrogen temperatures: -196 C (-321F, 77K)? It's probably impractical commercially, but maybe something of value to a time nut. Would that dramatically lower temperature improve phase noise & short-term performance? Is there a crystal cut that could be optimized for 77 K instead of ~25 C (room) or 60 C (oven)?
>
> If not Nitrogen, how about dry ice (-109F -78C)?
>
> /tvb
>
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