The WBCDB3-1860-1878.5-1881.5-1900-30-2 from Wainwright Instruments is a Band Pass Filter with Frequency 1.8785 to 1.8815 GHz, Bandwidth 3 MHz, Center Frequency 1.88 GHz, Insertion Loss 1.25 to 1.5 dB, Rejection 30 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCDB3-1860-1878.5-1881.5-1900-30-2 can be seen below.