The WHJ2-1000-3000-40-8000-20 from Wainwright Instruments is a RF High Pass Filter with Frequency 1 / 3 GHz to 8 GHz, Insertion Loss 0.2 to 0.25 dB, Power 20 W, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHJ2-1000-3000-40-8000-20 can be seen below.