The SiMF7/R4-6E3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 6.8 to 7.2 GHz, Center Frequency 7 GHz, Insertion Loss 2.3 dB, Rejection 30 dB @6.45GHz&7.55GHz, 40 dB @6.3GHz&7.7GHz, 60 dB @DC~5.5GHz, 55 dB @8~12GHz, Upper Rejection 30 to 55 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF7/R4-6E3 can be seen below.