The ECA2665P30B30BP from ECHO Microwave is a Band Pass Filter with Frequency 2.65 to 2.68 GHz, Insertion Loss 0.8 dB, Rejection 30 dB @ 2620 to 2640MHz, Ripple 0.4 dB, Return Loss 20 dB. Tags: Cavity Filter. More details for ECA2665P30B30BP can be seen below.