The WHJ3-80-1000-40-1250-50 from Wainwright Instruments is a RF High Pass Filter with Frequency 80 / 1 GHz to 1.25 GHz, Insertion Loss 0.3 to 0.35 dB, Power 50 W, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHJ3-80-1000-40-1250-50 can be seen below.