The WBCTB10-1777.5-1785-1805-1812.5-40-1 from Wainwright Instruments is a Band Pass Filter with Frequency 1.785 to 1.805 GHz, Bandwidth 20 MHz, Center Frequency 1.795 GHz, Insertion Loss 2.5 to 3.5 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB10-1777.5-1785-1805-1812.5-40-1 can be seen below.