The EDA4E1044P18J27 from ECHO Microwave is a Band Pass Filter with Frequency 1.04 to 1.05 GHz, Insertion Loss 5 dB, Rejection 27 to 50 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E1044P18J27 can be seen below.