The CBPFS-0881 from Crystek Corporation is a Band Pass Filter with Frequency 869 to 894 MHz, Bandwidth 25 MHz, Center Frequency 881.500 MHz, Insertion Loss 2.2 dB, Rejection 28 to 55 dB. Tags: Module with Connectors, RF SAW Filter. More details for CBPFS-0881 can be seen below.