The WBCGV12-1880-1890-1910-1920-50-2 from Wainwright Instruments is a Band Pass Filter with Frequency 1.89 to 1.91 GHz, Bandwidth 20 MHz, Center Frequency 1.9 GHz, Insertion Loss 3.5 to 4.5 dB, Rejection 50 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCGV12-1880-1890-1910-1920-50-2 can be seen below.