The ECA457C467P2G8E25A from ECHO Microwave is a Band Pass Filter with Frequency 456 to 468 MHz, Insertion Loss 2.5 dB, Rejection 25 dB @ 451 to 453 MHz, Ripple 1 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA457C467P2G8E25A can be seen below.