The ECA811R856P10G35E30BR from ECHO Microwave is a Band Pass Filter with Frequency 806 to 861 MHz, Insertion Loss 2.5 dB, Rejection 30 to 80 dB, Ripple 2 dB, Return Loss 20 dB. Tags: Cavity Filter. More details for ECA811R856P10G35E30BR can be seen below.