[time-nuts] 4.19 MHz xtal

[ed breya]

I forgot to add that there's nothing remarkable about 4.194304 MHz in 
terms of stability - it's just high enough to fit in reasonably small 
packaging for clock use, and not take too-too much power. Lower 
frequencies can work just fine, but the crystal tends to get way bigger. 
The 32,768 kHz piezo-tuning-fork style ones solved the size problem, and 
can run at extremely low power. They are not "crystals" though, in the 
conventional sense.

So, your Philips clock is likely no better or worse than any other brand 
that used a common clock IC along with this common 2^n crystal frequency.

Ed