The WHKX6-2000-3000-40-18000-5 from Wainwright Instruments is a RF High Pass Filter with Frequency 2 / 3 GHz to 18 GHz, Insertion Loss 0.8 to 1.2 dB, Power 5 W, Rejection 40 dB, VSWR 1.67:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHKX6-2000-3000-40-18000-5 can be seen below.