The WBCTB10-1845-1852.5-1872.5-1880-40 from Wainwright Instruments is a Band Pass Filter with Frequency 1.8525 to 1.8725 GHz, Bandwidth 20 MHz, Center Frequency 1.8625 GHz, Insertion Loss 2.5 to 3.5 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB10-1845-1852.5-1872.5-1880-40 can be seen below.