[time-nuts] 4.19 MHz xtal

[Tim Shoppa]

2 to the 22nd power is 4.194304MHz.

32768 Hz crystals are a tuning fork cut with a very different temperature
curve than a typical AT cut which your 4.19MHz crystal probably is.

Tim N3QE

On Sun, Mar 31, 2019 at 6:03 PM Neville Michie <namichie at gmail.com> wrote:

> Hi,
> I have a Philips quartz clock that runs on 4.19 MHz.
> In spite of the high frequency it still runs for years
> on a C cell.
> Can any of the quartz crystal gurus explain why this
> frequency was chosen? I believe that this clock was
> supposed to have better than usual accuracy.
> Philips always had a high level of engineering excellence.
>
> cheers,
> Neville Michie
>
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