The development of a 455 kHz filter test and measurement setup
Buy Wholesale China Lt455u Ceramic Filter, Center Frequency 450/455 Khz, Low Insertion Loss, High Selectivity & Lt450u Ceramic Filter, Sjk Filter,8×7×8mm 4db, at USD 0.001 | Global Sources
Original New 100% Ceramic Filter Sfu455y 455khz Dip 3pin 455a 455b (inductor) - Inductors - AliExpress
How to make an IF filter on 455 KHz yourself & test the bandwidth with a wobbulator - YouTube
Ceramic Filters for AM (LTP) Series - DeMint Components
receiver - Combining two CFU455IT +/-2kHz (4kHz) ceramic filters to get a +/-1.25kHz (2.5kHz) filter for SSB - Amateur Radio Stack Exchange