[time-nuts] Sidereal timekeeping

[Bruce Griffiths]

Jim Lux wrote:
> On 5/16/11 2:58 PM, iovane at inwind.it wrote:
>> Neville,
>> at present I have not enough skill with micros to solve the problem.
>> I think I will try modifying a crystal. This would not be that 
>> difficult using
>> a lapping sheet or the like. And opening the can would be quite easy 
>> using hot
>> air.
>
> or a fine jeweler's saw or tubing cutter.
>
> As you pointed out, the crystals are cheap, so you can afford to ruin 
> a few while figuring out how to do it.
>
> (and then, remember us all, when you're a multi-billionaire having 
> cornered the market on sidereal rate crystals<grin>)
>
>
Since the 32 kHz crystal is likely to be a tuning fork form, one merely 
needs to shorten the tines to increase the frequency.
It may be feasible to do this without removing any of the electrode 
metallization.

Bruce