The HPF1000M from Lotus Communication Systems is a RF High Pass Filter with Frequency 1.08 to 4 GHz, Bandwidth 2920 MHz, Insertion Loss 1.5 dB (1.3 to 2 dB), Power 7 W, Rejection 20 to 40 dB. Tags: Module with Connectors. More details for HPF1000M can be seen below.