The ECA16500P100D45A from ECHO Microwave is a Band Pass Filter with Frequency 16.45 to 16.55 GHz, Insertion Loss 2 dB, Rejection 45 dB @ DC to 16000MHz, Ripple 0.5 dB, Return Loss 16 dB. Tags: Cavity Filter. More details for ECA16500P100D45A can be seen below.