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User Manual
UM-20 Low-cost Oven-controlled Crystal Oscillator (OCXO) Assembly
9
Table 1: MTI OCXO-based oscillator module from SN
'142
It appears that at some point (after 1998?), XL Microwave
switched from IsoTemp’s (large) OCXO36-44s to MTI’s smaller
220-0102 OCXOs; the IsoTemp units appear to be of higher long-
term quality and may be double-ovenized, but probably also cost
much more.
Various Internet searches and user forums (especially
http://leapsecond.com/time-nuts.htm
) revealed a large community
of tinkerers and engineers with a shared interest in frequency
standards and measurements. For example, Gerry Sweeney built a
nice reference using an IsoTemp OCXO131:
http://gerrysweeney.com/tag/ocxo131/
... note that he is using an
OCXO100-XXX .. that is a +5V unit. There is also an OCXO191
available (probably 12V). And this has even more detail:
http://gerrysweeney.com/tag/ocxo131-191/
.
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