The HPF1810M from Lotus Communication Systems is a RF High Pass Filter with Frequency 1.95 to 4.75 GHz, Bandwidth 2800 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 HPF1810M can be seen below.