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Hi
All,
When I
built my first xtal controlled Tx (2 Metres) I changed the frequencies of
xtals for the oscillator using very fine carborundum paste &
rubbed the quartz slice in a figure of 8 movement on a flat surface, this
was successful exept when putting too much pressure & breaking the tiny
slice. The quartz slice probably can't be removed from the encapsulations today
to use this method.
73
Gary -
G4WGT.
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
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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