The SiMS7R4/R4-6D4 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.2 to 7.6 GHz, Center Frequency 7.4 GHz, Insertion Loss 2.5 dB, Rejection 30 dB @6.75GHz&7.95GHz, 40 dB @6.7GHz&8GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS7R4/R4-6D4 can be seen below.