Andy,

This filter is shown in the LF Experimenters Handbook on page 25, as part

of

the outline design for a narrow bandwidth LF receiver.  The frequency
response I measured is given on page 26

A step change causes it to ring for a few cycles

Thanks for the info - looks good!. I'll read that article tonight (must have
missed it) and also check out the filter on the bench as soon as I can pick
up the xtals.

Bill A

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