The ECA1175P50B100BFM from ECHO Microwave is a Band Pass Filter with Frequency 1.15 to 1.2 GHz, Insertion Loss 1 dB, Rejection 100 dB @ 1050MHz, Ripple 0.8 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA1175P50B100BFM can be seen below.