The WHJE4-30-40-40-400-1 from Wainwright Instruments is a RF High Pass Filter with Frequency 30 / 40 MHz to 400 MHz, Insertion Loss 0.9 to 2.5 dB, Power 1 W, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHJE4-30-40-40-400-1 can be seen below.