Quote:
Originally Posted by Sean Williams
At risk of wading in over my head here......
Why does the IF frequency matter?
If the IF is 11Mhz, and it has enough gain at that frequency, then why not use it?
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I agree with Sean concerning the choice of IF, but have you considered the loss in the crystal filter ? Is it being correctly terminated at the input and output with the correct impedances ? If you are using coupled windings then just try shorting the filter out - the selectivity will be horrible but you might see a large increase in signals ??
John