The 4312C-4 from Narda-MITEQ is a Power Divider with Frequency 1 to 2 GHz, Insertion Loss 0.9 dB, Isolation 22 dB, Input Power 3 to 30 W, Amplitude Balance 0.3 dB. Tags: Module with Connectors, Reactive Power Divider, Octave Power Divider. More details for 4312C-4 can be seen below.