The D4-16FD from Microlab is a Power Divider with Frequency 698 MHz to 3.8 GHz, Insertion Loss Less than 0.1 dB, Input Power 500 W, PIM Less than-153 dBc, Operating Temperature -35 to 85 Degree C. Tags: Module with Connectors, Reactive Power Divider. More details for D4-16FD can be seen below.
