The SiMF34R25/R7-7W3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 33.6 to 34.9 GHz, Center Frequency 34.25 GHz, Insertion Loss 2.7 dB, Rejection 30 dB @32.65GHz&35.8GHz, 40 dB @32.4GHz&36GHz, 50 dB @DC~32GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF34R25/R7-7W3 can be seen below.