The WHJ4-80-1000-60-1250-50 from Wainwright Instruments is a RF High Pass Filter with Frequency 80 / 1 GHz to 1.25 GHz, Insertion Loss 0.45 to 0.5 dB, Power 50 W, Rejection 60 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHJ4-80-1000-60-1250-50 can be seen below.