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Original New 100% Ceramic Filter Sfu455y 455khz Dip 3pin 455a 455b (inductor) - Inductors - AliExpress
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rf - Is it possible to combine two CFU455IT +/-2kHz (4kHz) ceramic filters to get a +/-1.25kHz bandwith (2.5kHz) filter? - Electrical Engineering Stack Exchange
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