The LPF4400M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 4.4 GHz, Stopband Frequency 6.7 to 13 GHz, 3 dB Cutoff Frequency 5290 MHz, Insertion Loss 1.2 dB, Rejection 20 to 30 dB. Tags: Module with Connector. More details for LPF4400M can be seen below.