The PD0004-S2 from Inmet by Spectrum Control is a Power Divider with Frequency 500 to 4000 MHz, Insertion Loss 0.5 dB, Isolation 20 dB, Input Power 10 W, Phase Balance 4 Degrees. Tags: Module with Connectors, Wilkinson Power Divider. More details for PD0004-S2 can be seen below.