The D4-A15 from RD Microwaves is a Power Divider with Frequency 0.7 to 2.2 GHz, Insertion Loss 6 dB, Isolation 18 dB, Input Power 5 W, Phase Balance ±0.25 Degree. Tags: Module with Connectors, Wilkinson Power Divider. More details for D4-A15 can be seen below.