The ECA1505P50C40B from ECHO Microwave is a Band Pass Filter with Frequency 1.48 to 1.53 GHz, Insertion Loss 1.5 dB, Rejection 40 dB @ DC to 1450MHz, Ripple 0.5 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA1505P50C40B can be seen below.