The 8C11D4G-300-CD-SFF from Quantic PMI (Planar Monolithics) is a Band Pass Filter with Frequency 11.25 to 11.55 GHz, Bandwidth 300 MHz, Center Frequency 11400 MHz, Insertion Loss 3 dB, Rejection 80dBc @ 10.8 and 12.0GHz. Tags: Module with Connectors, Cavity Filter. More details for 8C11D4G-300-CD-SFF can be seen below.