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File : /K1RF/3.28MHz QER equiripple CW crystal filter.jpg
Uploaded by : k1rf_digital_steve <>
Description : narrow CW QER equiripple crystal filter. The paralled end crystals flatten the response. For shunt caps, subtract crystal leads to cfase capacitance from the values shown. The LC-s at end are for impedance match. 400Hz at 3dB, 502 Hz at 6dB down

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k1rf_digital_steve <>