The EDA4E1227P20K65 from ECHO Microwave is a Band Pass Filter with Frequency 1.22 to 1.24 GHz, Insertion Loss 5.24 dB, Rejection 65 dB @ 1157MHz, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E1227P20K65 can be seen below.