The ECA465P1H50B from ECHO Microwave is a Band Pass Filter with Frequency 465.54 to 465.65 MHz, Insertion Loss 4 dB, Rejection 50 dB @ 450 to 460.655MHz, Ripple 1.5 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA465P1H50B can be seen below.