The FH1000-1800SF from Corech Microwave is a RF High Pass Filter with Frequency 10 to 18 GHz, Bandwidth 8000 MHz, Insertion Loss 0.8 to 1.0 dB, Power 10 W, Rejection 50 dB @DC-5.85 GHz. Tags: Module with Connectors. More details for FH1000-1800SF can be seen below.