No. There is just a little rectangular quartz wafer. No plating. In fact, post WWII, when many ham transmitters were 'rock bound' (ie: crystal conteolled) it was common pratice to regrind mil surplus rystals to move them into the ham banda.
Apparently, some were also etched using a cleanser called Whink, which contains a flourine compound. Also, some advocated applying graphite from a pencil lead was used to decrease the frequency. If the crystal ativity was low, they were taken appart and cleaned. -John ============== > I'm puzzling over this statement. The FT-243's I have seen have a spring > that squishes the quartz blank between the electrodes. They aren't plated > onto the quartz, but they are still in intimate mechanical and electrical > contact. > > -Chuck Harris > > Bob Camp wrote: >> Hi >> >> The WWII era FT-243 is one example of a crystal that has the active >> portion of the >> electrodes separated from the resonator by an air gap. There are lots of >> similar >> holders from that era that do pretty much the same thing. Non-contacting >> electrodes are not very new. >> >> Bob > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.