[time-nuts] 4.19 MHz xtal

[Neville Michie]

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