The ECA480P2I50B from ECHO Microwave is a Band Pass Filter with Frequency 479.28 to 481.29 MHz, Insertion Loss 4.5 dB, Rejection 50 dB @ 450 to 478.2925MHz, Ripple 3 dB, Return Loss 16 dB. Tags: Cavity Filter. More details for ECA480P2I50B can be seen below.