[time-nuts] Are there SC-crystals out there in the wild that are not Overtone?

[Richard (Rick) Karlquist]

Been there; done that!

Rick N6RK

On 2/27/2020 12:15 PM, David Van Horn via time-nuts wrote:
> I remember opening up those military crystals and sanding them down with Ajax cleaner to raise the frequency or rubbing a little solder on the plate to lower it for CW transmitters.
> 
> High school days. 😊
> 
> --
> David VanHorn
> Lead Hardware Engineer
> 
> Backcountry Access, Inc.
> 2820 Wilderness Pl, Unit H
> Boulder, CO  80301 USA
> phone: 303-417-1345  x110
> email: david.vanhorn at backcountryaccess.com
> 
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