The WHKX8-6500-8000-40-18000-5 from Wainwright Instruments is a RF High Pass Filter with Frequency 6.5 / 8 GHz to 18 GHz, Insertion Loss 1.4 to 2 dB, Power 5 W, Rejection 40 dB, VSWR 1.67:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHKX8-6500-8000-40-18000-5 can be seen below.