Thank goodness for quartz: https://www.radioworld.com/columns-and-views/roots-of-radio/crystals-whats-going-on-in-there -- 73, Jeff KH6O / 6 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/cw/attachments/20240605/b535020f/attachment.html>