The 4372A-6 from Narda-MITEQ is a Power Divider with Frequency 800 MHz to 2.5 GHz, Insertion Loss 0.8 to 1 dB, Isolation 18 dB, Input Power 0.5 to 30 W, Amplitude Balance 0.5 to 0.7 dB. Tags: Module with Connectors, Reactive Power Divider. More details for 4372A-6 can be seen below.