The APD-4-218 from American Microwave Corporation is a Power Divider with Frequency 2 to 18 GHz, Insertion Loss 1.5 dB, Isolation 17 to 18 dB, Input Power 0.75 to 25 W, Amplitude Balance 0.5 to 0.9 dB. Tags: Module with Connectors, Multi-Octave Power Divider, Octave Power Divider. More details for APD-4-218 can be seen below.