The PDM-00503-S4 from RF ONE Electronics is a Power Divider with Frequency 0.5 to 3 GHz, Insertion Loss 0.7 dB, Isolation 20 dB, Input Power 2 W (Combiner), 30 W (Divider), Amplitude Balance ±0.2 dB. Tags: Module with Connectors, Wilkinson Power Divider, Lumped Element Power Divider. More details for PDM-00503-S4 can be seen below.