What's surprising is that Icom is only getting frequency stability on
the order of 1 ppm out of their OCXO which is pretty much what we expect
from a modern TCXO! (It's hard to say exactly what Icom is getting since
the spec is in Hz, rather than ppm.) Most OCXO's I've encountered are
one or two orders of magnitude better than that over the same operating
temperature range.

It may be that Icom's spec sheet simply shows the FCC required
stability, rather than actual, which may be better than required. Not
the usual marketing approach if that's what they're doing.

Or, their OCXO is "low-tech" and designed only to meet the spec.

Chuck

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