The ECA5500P2000D60A from ECHO Microwave is a Band Pass Filter with Frequency 4.5 to 6.5 GHz, Insertion Loss 2 dB, Rejection 60 dB @ 2000 to 4000MHz, Ripple 1.2 dB, Return Loss 10 dB. Tags: Cavity Filter. More details for ECA5500P2000D60A can be seen below.