The WHKE5-25-40-80-500-1 from Wainwright Instruments is a RF High Pass Filter with Frequency 25 / 40 MHz to 500 MHz, Insertion Loss 1.4 to 2 dB, Power 1 W, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHKE5-25-40-80-500-1 can be seen below.