Murata's CFU, CFW, SFP 450kHz to 455kHz Ceramic Filters | TTI, Inc.
Ceramic Filters, April 1969 Electronics World - RF Cafe
LT455U ceramic filter, center frequency 450/455 KHz, low insertion loss, high selectivity, 3 pin ceramic filter 2dB Max Pass band ripple SJK ceramic filter - Buy China LT450U ceramic filter, SJK filter,8×7×8MM
450/455KHz Ceramic Filter with Bandwidth Ranging from 6 to 30KHz, Suitable for Communication, - Buy China 450/455KHz Ceramic Filter on Globalsources.com