The 30403 from Narda-MITEQ is a Power Divider with Frequency 820 to 915 MHz, Insertion Loss 0.5 to 5.4 dB, Isolation 20 dB, Input Power 80 W, Amplitude Balance 0.2 dB. Tags: Module with Connectors, Reactive Power Divider. More details for 30403 can be seen below.