The WHW2-21000-21500-40-39000-30 from Wainwright Instruments is a RF High Pass Filter with Frequency 21 / 21.5 GHz to 39 GHz, Insertion Loss 0.5 to 0.75 dB, Power 30 W, Rejection 40 dB, VSWR 1.67:1. Tags: Module with Connectors. More details for WHW2-21000-21500-40-39000-30 can be seen below.