The ECA1176P40A40CLP500-3RU from ECHO Microwave is a Band Pass Filter with Frequency 1.16 to 1.2 GHz, Insertion Loss 0.5 dB, Rejection 40 to 60 dB, Ripple 0.3 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA1176P40A40CLP500-3RU can be seen below.