question about crystal spacing in filter

eternalesquire <eternalsquire@...>
 

Hi,

I never saw anything about the original article about this. I've used
the BFO and a frequency counter to measure all my crystals. How
closely do they need to be matched for SSB reception? for CW reception?

Thanks,

The Eternal Squire

P.S. I am using 10.7 Mhz as the IF

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