The CHPFL-0100 from Crystek Corporation is a RF High Pass Filter with Frequency DC to 100 MHz, Insertion Loss 1.72 to 103.66 dB, Power 4 W, Return Loss 0.01 to 11.80 dB, Operating_Temperature -40 to 85 Degree C. Tags: Connectorized, Butterworth. More details for CHPFL-0100 can be seen below.