10 to 12 kc?? would make a nice roofing filter on a double
conversion :-)
dg9bfc sigi
Am 09.11.2021 um 16:49 schrieb Niels
Jalling:
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Please give more details on how-to calculate (and build) the 40MHz
xtal-filter.
When I calculate values for ladder filters at 40MHz I get a
maximum bandwidth of around 10-12kHz.
Niels, oz9ny
