[time-nuts] overtone crystal question

[Hal Murray]

kb8tq at n1k.org said:
> ( If I want a good 3rd overtone, it will be designed to work well there. It
> may be pretty bad on the fundamental ….).

Thanks.

What sort of things would you do to a crystal to make it work well at 3rd 
overtone and/or why do they make operation at the fundamental worse?

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