The WHJE2-400-500-30-3000-1 from Wainwright Instruments is a RF High Pass Filter with Frequency 400 / 500 MHz to 3 GHz, Insertion Loss 0.3 to 0.5 dB, Power 1 W, Rejection 30 dB, VSWR 1.67:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHJE2-400-500-30-3000-1 can be seen below.