[time-nuts] Difference in manufacturing for fundamental tone, 3rd, and 5th overtone crystals

Bob Camp kb8tq at n1k.org
Fri Oct 28 02:02:44 UTC 2016


Hi

Indeed, there are processes for things like filter crystals that reduce the 
(very) near by responses. There are approaches for things like SC’s to
take out the somewhat further out “bothersome” stuff.

Bob

> On Oct 27, 2016, at 7:53 PM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
> 
> Hi,
> 
> Hmm, such fiddeling could maybe also apply to nearby alternative modes of the crystals, even if I guess it would be harder to do meaningful dents on them.
> 
> Cheers,
> Magnus
> 
> On 10/28/2016 01:50 AM, Bob Camp wrote:
>> Hi
>> 
>> Crystals are highly optimized for the specific overtone they are
>> intended to operate on. In fact, you can fiddle them to the point
>> that they no longer have a “fundamental” response.
>> 
>> Bob
>> 
>>> On Oct 27, 2016, at 6:42 PM, Attila Kinali <attila at kinali.ch> wrote:
>>> 
>>> Moin,
>>> 
>>> I have stumbled over another question I am unable to answer using the
>>> tools I have available: Is there any fundamental difference in manufacturing
>>> fundamental and overtone chrystals. Or to be more precise: is there an
>>> optimization process during manufacturing that makes a crystal more suited
>>> for one of the harmonics than for the others or all crystals similarly
>>> well suited to be used as an fundamental crystal as they are for the 3rd
>>> or 5th overtone?
>>> 
>>> 
>>> 			Attila Kinali
>>> --
>>> Malek's Law:
>>>       Any simple idea will be worded in the most complicated way.
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