The ?D-640-8 from ET Industries is a Power Divider with Frequency 6 to 40 GHz, Insertion Loss 3.6 dB, Isolation 13 to 19 dB, Input Power 20 W, Amplitude Balance ± 0.9 dB. Tags: Module with Connectors, Stripline Power Divider. More details for ?D-640-8 can be seen below.