The HJM-4R-16G from Crane Aerospace & Electronics is a 180 Degree Hybrid Coupler with Frequency 6 to 26.5 GHz, Average Power 1 W, Coupling -3 dB, Amplitude Balance 1.4 dB, Phase Balance ±12 Degrees. Tags: Module with Connectors. More details for HJM-4R-16G can be seen below.