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

[Richard (Rick) Karlquist]

On 6/9/2022 10:03 AM, Bruce Hunter via time-nuts 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

Absolutely not.  It is strictly due to thermal stress compensation.

Rick N6RK