The PDM-21-12G SQ from Crane Aerospace & Electronics is a Space Qualified Power Divider with Frequency 10.5 to 13 GHz, Insertion Loss 0.5 dB, Isolation 20 dB, Input Power 2 W, Amplitude Balance 0.2 dB. Tags: Module with Connectors, Wilkinson. More details for PDM-21-12G SQ can be seen below.