[time-nuts] The 5MHz Sweet Spot

[Bob Camp]

Hi

As I mentioned there is data. It’s from parts made in small packages. Even back in the days of glass packages they didn’t / couldn’t go for full size blanks at low frequencies. There *is* a lot of data that things like flicker noise are not improved when you have a blank edge very much involved in the resonator. 

Bob

On Nov 2, 2013, at 7:16 AM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:

> Hi Bob,
> 
> On 11/02/2013 06:07 AM, Bob Camp wrote:
>> Hi
>> 
>> The real answer is that nobody knows. The economics essentially make finding out very expensive. Q most certainly goes up, I don’t think anybody disputes that. The questions about flicker / ADEV all revolve around small blank parts with major edge sensitivity issues. They also probably were not running in a very good oven. Unless somebody with very deep pockets decides they need to find out, it’s going to be an un-answered question. 
> You can get some answers by looking back and use older crystals of
> bigger size. If needed a modern amplifier could be used.
> 
> Cheers,
> Magnus
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