The WBCTB10-1872.5-1880-1900-1907.5-40 from Wainwright Instruments is a Band Pass Filter with Frequency 1.88 to 1.9 GHz, Bandwidth 20 MHz, Center Frequency 1.89 GHz, Insertion Loss 2.5 to 3.5 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB10-1872.5-1880-1900-1907.5-40 can be seen below.