The LBF-600/400-J11 from Leader-MW is a Band Pass Filter with Frequency 400 to 800 MHz, Insertion Loss 1.5 dB, Upper Rejection 50 dB, Lower Rejection 50 dB, VSWR 2.00:1. Tags: Module with Connectors, Cavity Filter. More details for LBF-600/400-J11 can be seen below.