See final pages in:
The 60111 variant is a lower spec version intended for use in counters.
> On 07 March 2018 at 17:50 Perry Sandeen via time-nuts
> <firstname.lastname@example.org> wrote:
> When perusing HP xtal oscillators on ebay I noticed some cases were
> marked HP 10811 and the same appearing unit was marked HP 10811-60111.
> Are both the same for TN purposes?
> If so what are the differences?
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