The D-218-8 from ET Industries is a Power Divider with Frequency 2 to 18 GHz, Insertion Loss 3.30 to 4 dB, Isolation 16 to 22 dB, Input Power 20 W, Amplitude Balance ± 0.6 dB. Tags: Module with Connectors, Stripline Power Divider. More details for D-218-8 can be seen below.