The LPF2250M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 2.25 GHz, Stopband Frequency 2.9 to 7.2 GHz, 3 dB Cutoff Frequency 2570 MHz, Insertion Loss 1.2 dB, Rejection 20 to 30 dB. Tags: Module with Connector. More details for LPF2250M can be seen below.