The ECA1493P33F45A from ECHO Microwave is a Band Pass Filter with Frequency 1.48 to 1.51 GHz, Insertion Loss 3 dB, Rejection 45 dB @ 1474MHz &1513MHz, Ripple 2 dB, Return Loss 15 dB. Tags: Cavity Filter. More details for ECA1493P33F45A can be seen below.