The WHKE4-100-150-40-1200-1 from Wainwright Instruments is a RF High Pass Filter with Frequency 100 / 150 MHz to 1.2 GHz, Insertion Loss 0.7 to 1.5 dB, Power 1 W, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Lumped Component Filter. More details for WHKE4-100-150-40-1200-1 can be seen below.