The WBCTB3-921-924-928-931-20 from Wainwright Instruments is a Band Pass Filter with Frequency 924 to 928 MHz, Bandwidth 4 MHz, Center Frequency 926 MHz, Insertion Loss 1.25 to 2 dB, Rejection 20 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-921-924-928-931-20 can be seen below.