The PDK-21-15.5G SQ from Crane Aerospace & Electronics is a Space Qualified Power Divider with Frequency 12 to 19 GHz, Insertion Loss 1 dB, Isolation 18 dB, Input Power 0.5 to 2 W, Amplitude Balance 0.25 dB. Tags: Module with Connectors, Wilkinson. More details for PDK-21-15.5G SQ can be seen below.