The 4321C-4 from Narda-MITEQ is a Power Divider with Frequency 500 MHz to 2 GHz, Insertion Loss 1.3 dB, Isolation 20 dB, Input Power 3 to 30 W, Amplitude Balance 0.3 dB. Tags: Module with Connectors, Reactive Power Divider, Multi-Octave Power Divider. More details for 4321C-4 can be seen below.