The LPF2000M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 2 GHz, Stopband Frequency 3 to 4.65 GHz, 3 dB Cutoff Frequency 2270 MHz, Insertion Loss 1.5 dB, Rejection 20 to 30 dB. Tags: Module with Connector. More details for LPF2000M can be seen below.