The CBPFS-0433 from Crystek Corporation is a Band Pass Filter with Frequency 428.92 to 438.92 MHz, Bandwidth 10 MHz, Center Frequency 433.920 MHz, Insertion Loss 2 dB, Rejection 28 to 55 dB. Tags: Module with Connectors, RF SAW Filter. More details for CBPFS-0433 can be seen below.