The ECA2492P20E45A from ECHO Microwave is a Band Pass Filter with Frequency 2.48 to 2.5 GHz, Insertion Loss 2.5 dB, Rejection 45 dB @ 1000 to 2470MHz, Ripple 1.5 dB, Return Loss 16 dB. Tags: Cavity Filter. More details for ECA2492P20E45A can be seen below.