[Boatanchors] 100 KHZ CRYSTAL

[Bill and Liz]

I just found a 100 khz crystal in a grey metal enclosure the same as, say, a 
6SK7.  It is marked US Navy but nothing else except the date 1945.

Anyone suggest what radio it came from? Were these crystals built ruggedly 
enough to have survived all these years?  I'd like to use it in a calibrator 
circuit for one of my receivers.

Bill VE3NH 



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