The ECA1442P185C40A from ECHO Microwave is a Band Pass Filter with Frequency 1.35 to 1.54 GHz, Insertion Loss 1.5 dB, Rejection 40 dB @ 1200MHz, Ripple 0.4 dB, Return Loss 20 dB. Tags: Cavity Filter. More details for ECA1442P185C40A can be seen below.