91
The RF Workbench / etching crystals-increasing the frequency on your ft-243s
« on: March 27, 2016, 2115 UTC »
I learned today you can buy dilute hydrofluoric acid (Whink brand fabric rust remover) to eat a bit off your nonfunctional or crappy frequency crystals to make them operate where you want. Seems to eat away and increase the frequency somewhere in the neighborhood of 1 khz per 10 minutes with fresh stuff. Got to get me down to the Crap-mart and get some with a pair of autopsy gloves. Don't do it without a pair of breaking bad gloves.
Scroll down a bit to the whink thread
http://www.qth.net/pipermail/arc5/2014-November/subject.html#20177
Scroll down a bit to the whink thread
http://www.qth.net/pipermail/arc5/2014-November/subject.html#20177