The BP1000BW100-4-0S from R & K Company Limited is a Band Pass Filter with Frequency 950 MHz to 1.05 GHz, Center Frequency 1 GHz, Insertion Loss 1.5 dB, Rejection 50 dB, Power 2 W. Tags: Module with Connectors. More details for BP1000BW100-4-0S can be seen below.