The LPF2750M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 2.75 GHz, Stopband Frequency 4 to 8.4 GHz, 3 dB Cutoff Frequency 3150 MHz, Insertion Loss 1 dB, Rejection 20 to 30 dB. Tags: Module with Connector. More details for LPF2750M can be seen below.