The WHK3-700-1000-40-7000-20 from Wainwright Instruments is a RF High Pass Filter with Frequency 700 MHz / 1 GHz to 7 GHz, Insertion Loss 0.25 to 0.3 dB, Power 20 W, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHK3-700-1000-40-7000-20 can be seen below.