The SiMF2R65/R3-6D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 2.38 to 2.9 GHz, Center Frequency 2.65 GHz, Insertion Loss 3.5 dB, Rejection 30 dB @2.05GHz&3.3GHz, 40 dB @1.9GHz&3.4GHz, 60 dB @DC~1.7GHz, 60 dB @3.7~6.5GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF2R65/R3-6D2 can be seen below.