The 4372A-3 from Narda-MITEQ is a Power Divider with Frequency 800 MHz to 2.5 GHz, Insertion Loss 0.8 dB, Isolation 15 dB, Input Power 0.5 to 30 W, Amplitude Balance 0.2 dB. Tags: Module with Connectors, Reactive Power Divider. More details for 4372A-3 can be seen below.