The PDM-1218-S4 from RF ONE Electronics is a Power Divider with Frequency 12 to 18 GHz, Insertion Loss 1.0 dB, Isolation 18 dB, Input Power 1 W (Combiner), 20 W (Divider), Amplitude Balance ±0.3 dB. Tags: Module with Connectors, Wilkinson Power Divider, Lumped Element Power Divider. More details for PDM-1218-S4 can be seen below.