The WHKE4-0.5-1-50-70-0.01 from Wainwright Instruments is a RF High Pass Filter with Frequency 0.5 / 1 MHz to 70 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 WHKE4-0.5-1-50-70-0.01 can be seen below.