The D-1040-4 ? from ET Industries is a Power Divider with Frequency 10 to 40 GHz, Insertion Loss 2.50 dB, Isolation 18 dB, Input Power 20 W, Amplitude Balance ± 0.7 dB. Tags: Module with Connectors, Stripline Power Divider. More details for D-1040-4 ? can be seen below.