The WHKE4-3-5-50-100-0.01 from Wainwright Instruments is a RF High Pass Filter with Frequency 3 / 5 MHz to 100 MHz, Insertion Loss 0.8 to 1.6 dB, Power 0.01 W, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHKE4-3-5-50-100-0.01 can be seen below.