The PD0204-S4 from Inmet by Spectrum Control is a Power Divider with Frequency 2000 to 4000 MHz, Insertion Loss 0.6 dB, Isolation 60 dB, Input Power 10 W, Phase Balance 6 Degrees. Tags: Module with Connectors, Wilkinson Power Divider. More details for PD0204-S4 can be seen below.