![receiver - Combining two CFU455IT +/-2kHz (4kHz) ceramic filters to get a +/-1.25kHz (2.5kHz) filter for SSB - Amateur Radio Stack Exchange receiver - Combining two CFU455IT +/-2kHz (4kHz) ceramic filters to get a +/-1.25kHz (2.5kHz) filter for SSB - Amateur Radio Stack Exchange](https://i.stack.imgur.com/71GZS.png)
receiver - Combining two CFU455IT +/-2kHz (4kHz) ceramic filters to get a +/-1.25kHz (2.5kHz) filter for SSB - Amateur Radio Stack Exchange
![Simplest 455 KHz Oscillator uses only three parts negative resistance ceramic filter oscillator ceramic resonator oscillator Simplest 455 KHz Oscillator uses only three parts negative resistance ceramic filter oscillator ceramic resonator oscillator](http://www.tompolk.com/inventions/455_KHz_Oscillator/455PolkOscillator.jpg)
Simplest 455 KHz Oscillator uses only three parts negative resistance ceramic filter oscillator ceramic resonator oscillator
![Original New 100% Ceramic Filter Sfu455y 455khz Dip 3pin 455a 455b (inductor) - Inductors - AliExpress Original New 100% Ceramic Filter Sfu455y 455khz Dip 3pin 455a 455b (inductor) - Inductors - AliExpress](https://ae01.alicdn.com/kf/HTB1XExPT9zqK1RjSZFHq6z3CpXaX/Original-new-100-ceramic-filter-SFU455Y-455KHZ-DIP-3pin-455A-455B-Inductor.jpg)