[time-nuts] A Nice Slice of History

[gandalfg8 at aol.com]

For those interested in the historical aspects, mid 50s in this instance, of crystals and crystal oscillators in radio equipment...
https://worldradiohistory.com/BOOKSHELF-ARH/Tube-Technology/Handbook-of-Piezoelectric-Crystals-John-P-Buchanan-1956-(701-pages).pdf
Even a few of them there 3 legged solid state thingies managed to sneak in an earlyish appearance:-)
Season's greetings to all
Nigel GM8PZR