The CSI-FLTR-3NF10-822.5/867.5 from Westell Technologies is a Band Pass Filter with Frequency 821 to 869 MHz, Bandwidth 48 MHz, Insertion Loss 2.0 dB, Power 10 W, Ripple 1.2 dB. Tags: Module with Connectors. More details for CSI-FLTR-3NF10-822.5/867.5 can be seen below.