10 MHz crystal matching

Heinz Schnait <oe5eep@...>
 

Hello,

I just measured the resonance frequency of ten 10 MHz crystals. I found a
set of four within 30 Hz and another set of four within 45 Hz.

How does this compare to other peoples results?

Did somebody already plot the passband shape of a resulting 4 crystal
filter?

73 Heinz, OE5EEP

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