The D218 from Clear Microwave, Inc is a Power Divider with Frequency DC to 18 GHz, Insertion Loss 1 to 1.2 dB, Input Power 2 W, Amplitude Balance 0.1 to 0.15 dB, Phase Balance 1.5 to 2.5 Degree. Tags: Module with Connectors, Through Hole, Resistive Power Divider. More details for D218 can be seen below.