The WBCGV4-428-433-435-440-40 from Wainwright Instruments is a Band Pass Filter with Frequency 433 to 435 MHz, Bandwidth 2 MHz, Center Frequency 434 MHz, Insertion Loss 3 to 4 dB, Rejection 40 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCGV4-428-433-435-440-40 can be seen below.