The ECA12500P2R13A from ECHO Microwave is a Band Pass Filter with Frequency 12.49 to 12.50 GHz, Insertion Loss 9 dB, Rejection 13 dB @ DC to 12480MHz, Ripple 3 dB, Return Loss 16 dB. Tags: Cavity Filter. More details for ECA12500P2R13A can be seen below.