[time-nuts] BTTF : Austron 1210-C Crystal Clock

[Jim Harman]

Thanks for the references, Tom. The clock portion must have been a 113.
Operation at 1 kHz would certainly explain the whine.

I also remember taking a peek inside the oven and seeing an impressively
large chunk of quartz.

On Mon, Jun 12, 2017 at 12:45 AM, Tom Van Baak <tvb at leapsecond.com> wrote:

> Hi Jim,
>
> Maybe a version of this?:
>
> http://leapsecond.com/history/Benchmark.htm
>
> The audible (1 kc) whine was probably from the model 113 or 115. See if
> any of the following pages remind you:
>
> http://leapsecond.com/hpclocks/
> http://www.radiomuseum.org/r/hewlett_pa_frequency_divider_and_cl.html
> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1959-11.pdf
> http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm
> http://hpmemoryproject.org/news/2012/vintage_01.htm
>
> /tvb
>
>
>
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-- 

--Jim Harman