[time-nuts] Improving the stability of crystal oscillators

[Tom Clifton]

While the website is not explicitly about frequency
measurement, there is an interesting bit on improving 
the stability of crystal oscillators with external
heater controllers.  While it may not be suitable for
long term high stability control it might be suitable
for many other purposes.

http://www.qrss.thersgb.net/Crystal-Ovens.html

The main page is also a good read:

http://www.qrss.thersgb.net/Receiving-QRSS.html#Introduction





       
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