The 8C1227-20-CD-SFF from Quantic PMI (Planar Monolithics) is a Band Pass Filter with Frequency 1.22 to 1.24 GHz, Bandwidth 20 MHz, Center Frequency 1227 MHz, Insertion Loss 2 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for 8C1227-20-CD-SFF can be seen below.