The ECA866P6A55BP from ECHO Microwave is a Band Pass Filter with Frequency 863 to 869 MHz, Insertion Loss 0.5 dB, Rejection 55 dB @ 500 to 814Mhz, Ripple 0.1 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA866P6A55BP can be seen below.