The 8CL1800-100-CD-SFF from Quantic PMI (Planar Monolithics) is a Band Pass Filter with Frequency 1.75 to 1.85 GHz, Bandwidth 100 MHz, Center Frequency 1800 MHz, Insertion Loss 1.5 dB, Rejection 60dB @ 1640MHz and 60dB @ 2000MHz. Tags: Module with Connectors, Combline Filter. More details for 8CL1800-100-CD-SFF can be seen below.