The SiMF34R65/R3-7W4 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 34.3 to 35 GHz, Center Frequency 34.65 GHz, Insertion Loss 3.5 dB, Rejection 35 dB @33.5GHz&35.7GHz, 40 dB @33.6GHz&35.9GHz, 60 dB @DC~10.3GHz, 45 dB @37.0~37.5GHz, Upper Rejection 35 to 45 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF34R65/R3-7W4 can be seen below.