Re: LF: TIP: modifiying X-tals

[Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>]

I even used sandpaper to make the quarz thinner and thus increase the  
frequency. That worked sometimes up to 10%.
73, Rik  ON7YD - OR7T

Quoting riese-k3djc@juno.com:

> In the ol days we would use a pencil or rub a bit of solder on the face
> real hams used ? acid to etch and raise the frequency,, I dont remember
> what the acid was but the local chemical company would sell a bit
>
> drill a hole in the mount face, tap it and use a screw to apply
> pressure and move the frequency around
>
> Bob K3DJC
>
>
> On Sat, 19 Aug 2006 21:16:13 +0200 "Dick" <knaap159@zonnet.nl> writes:
> For those who didn't know, use following 'trick' to tune your own X-tal.
> (found it in a magazine from the VERON)
>
> Take an permant marker pen ("Edding, or similar) and put a little
> stripe/line on the X-tal plate.
> You will notice that the frequency goes down a bit.


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