Hi,
I just found a 1000c/s (yes 1kHz) quartz crystal at a local radio car
boot sale. It's a NOS GEC "Quartz Crystal Unit" type DJC/669. It's in
an overlength minature valve (tube) glass envelope. The crystal is a
long slab with 3 connections. The 3rd connection seems to be a small
(feedback?) electrode.
What's the lowest frequency crystal made? Anyone have any suggestions
for an oscillator circuit?
Robert G8RPI.
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