The ECA947P25A40A from ECHO Microwave is a Band Pass Filter with Frequency 935 to 960 MHz, Insertion Loss 0.5 dB, Rejection 40 dB @ 500 to 893MHz, Ripple 0.3 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA947P25A40A can be seen below.