The ECA1176P30B90B from ECHO Microwave is a Band Pass Filter with Frequency 1.16 to 1.19 GHz, Insertion Loss 1 dB, Rejection 90 dB @ 1101&1251MHz, Ripple 0.5 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA1176P30B90B can be seen below.