The LPF400M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 400 MHz, Stopband Frequency 660 MHz to 5.5 GHz, 3 dB Cutoff Frequency 560 MHz, Insertion Loss 1 dB, Rejection 20 to 40 dB. Tags: Module with Connector. More details for LPF400M can be seen below.