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Old 14th Feb 2018, 1:17 pm   #12
G8HQP Dave
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Join Date: Sep 2008
Location: Solihull, West Midlands, UK.
Posts: 4,872
Default Re: Quartz crystal accuracy over time

I seem to recall reading somewhere (RSGB Handbook?) that crystals intended for overtone use are cut or treated in a way which discourages but does not fully inhibit the fundamental mode. Is this true or a myth? I suspect it is a myth, and crystals will more happily oscillate at their fundamental mode if given the chance.
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