The ECA4435P80C40AFM from ECHO Microwave is a Band Pass Filter with Frequency 4.4 to 4.48 GHz, Insertion Loss 1.2 dB, Rejection 40 dB @ 4320MHz, Ripple 0.3 dB, Return Loss 17 dB. Tags: Cavity Filter. More details for ECA4435P80C40AFM can be seen below.