The HJM-4R-6.5G from Crane Aerospace & Electronics is a 180 Degree Hybrid Coupler with Frequency 1 to 12.5 GHz, Average Power 1 W, Coupling -3 dB, Amplitude Balance 0.8 dB, Phase Balance ±10 Degrees. Tags: Module with Connectors. More details for HJM-4R-6.5G can be seen below.