In article ,
says...

Try http://www.realhamradio.com/GPS_Frequency_Standard.htm
Far more stable than cutting your own crystal, can't imagine why you think making one yourself would
be more stable than a good surplus xtal and oven.

...And it's disciplined to GPS as well. Can't get much more stable
than that. 'Bout the same as a cesium standard, if I recall correctly.


--
Dr. Anton Squeegee, Director, Dutch Surrealist Plumbing Institute
(Known to some as Bruce Lane, KC7GR)
kyrrin a/t bluefeathertech d-o=t c&o&m
"Quando Omni Flunkus Moritati" (Red Green)