The 8CL4D1G-200-CD-SFF from Quantic PMI (Planar Monolithics) is a Band Pass Filter with Frequency 4.1 GHz, Center Frequency 4100 MHz, Insertion Loss 0.7 dB, Rejection 40dB @ 4300MHz and 40dB @ 3900MHz and 60dB @ 12000 to 29000MHz, VSWR 1.50:1. Tags: Module with Connectors, Combline Filter. More details for 8CL4D1G-200-CD-SFF can be seen below.