EMRFD Message Archive 11234

Message Date From Subject
11234 2015-06-22 19:43:34 bob_ledoux Altering Crystal Frequencies
Back in my younger days I used to grind and polish FT-243 crystals to a desired frequency.  I'd also put soft pencil lead spot on a crystal face to alter the frequency.

There are lots of web pages that discuss these processes.

The FT-243 has four screws to remove the cover to access the crystal element.  Here is a more recent effort:

Hack Your Crystal’s Frequency