The LPF2600M from Lotus Communication Systems is a Low Pass RF Filter with Frequency DC to 2.6 GHz, Stopband Frequency 3.75 to 8.4 GHz, 3 dB Cutoff Frequency 3120 MHz, Insertion Loss 1.2 dB, Rejection 20 to 30 dB. Tags: Module with Connector. More details for LPF2600M can be seen below.