The EMA8H2442P84H55D from ECHO Microwave is a Band Pass Filter with Frequency 2.4 to 2.48 GHz, Insertion Loss 4 dB, Rejection 55 dB @ 2360 & 2580 MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H2442P84H55D can be seen below.