The WBCTB10-1749.9-1757.4-1777.4-1784.9-40 from Wainwright Instruments is a Band Pass Filter with Frequency 1.7574 to 1.7774 GHz, Bandwidth 20 MHz, Center Frequency 1.7674 GHz, Insertion Loss 2.5 to 3.5 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB10-1749.9-1757.4-1777.4-1784.9-40 can be seen below.