The LPF575M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 575 MHz, Stopband Frequency 900 MHz to 5.5 GHz, 3 dB Cutoff Frequency 770 MHz, Insertion Loss 1.2 dB, Rejection 20 to 40 dB. Tags: Module with Connector. More details for LPF575M can be seen below.