The ECA154P2CR25BM from ECHO Microwave is a Band Pass Filter with Frequency 153.72 to 156.01 MHz, Insertion Loss 1.5 dB, Rejection 25 dB @ 157.26 to 160.0MHz, Ripple 1 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA154P2CR25BM can be seen below.