The WHKE4-0.2-0.5-50-50-0.01 from Wainwright Instruments is a RF High Pass Filter with Frequency 0.2 / 0.5 MHz to 50 MHz, Insertion Loss 0.6 to 1.1 dB, Power 0.01 W, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHKE4-0.2-0.5-50-50-0.01 can be seen below.