The WBCDB3-1900-1918.5-1921.5-1940-30 from Wainwright Instruments is a Band Pass Filter with Frequency 1.9185 to 1.9215 GHz, Bandwidth 3 MHz, Center Frequency 1.92 GHz, Insertion Loss 1.25 to 1.5 dB, Rejection 30 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCDB3-1900-1918.5-1921.5-1940-30 can be seen below.