[time-nuts] Re: Is SC the most stable cut for lowest phase noise?

[Bob kb8tq]

Hi

There happen to be *some* AT cut based OCXO’s that beat the typical
SC cut on warmup … just saying …. :)

Bob

> On Jun 9, 2022, at 9:03 AM, Bruce Hunter via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> My only experience with SC-cut crystals is that time base oscillators in later EIP/Phase-Matrix counters with SC-cut crystal oscillators seem to warm-up from a cold start and stabilize more quickly than earlier AT-cut versions.  I was surprised to see from Jeff Cartwright's paper that SC-cut crystals operate at higher temperatures.  Could this rapid warm up characteristic be attributable to oven design rather than crystal cut?
> Bruce
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