[time-nuts] Improving the stability of crystal oscillators
Richard W. Solomon
w1ksz at earthlink.net
Sat Oct 13 19:53:34 EDT 2007
Sam Harris (SK) did that over 40 years ago. It provided a stable
reference for his pioneering work in Moonbounce Communication.
73, Dick, W1KSZ/7
>From: Bruce Griffiths <bruce.griffiths at xtra.co.nz>
>Sent: Oct 13, 2007 2:44 PM
>To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
>Subject: Re: [time-nuts] Improving the stability of crystal oscillators
>Brooke Clarke wrote:
>> Something I've been thinking about is attaching a large thermal mass of
>> aluminum to the crystal and it's oscillator then surrounding that with
>> insulation. Then surround that with a thin copper layer. Temperature sensors
>> on the copper and aluminum. If the thermal time constant could be made very
>> close to 24 hours, or integer multiples of that, it might be possible to
>> predict the inner temperature allowing compensation.
>> Has this already been done?
>Why stop there?
>Try burying the oscillator under 6ft or so of soil.
>The daily temperature fluctuations at this depth are very small.
>time-nuts mailing list -- time-nuts at febo.com
>To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>and follow the instructions there.
More information about the time-nuts