The MH-58 from CAES is a 180 Degree Hybrid Coupler with Frequency 8 to 16 GHz, Coupling 3 +0.45/-0 dB, Coupling Variation ±0.60 dB, Phase Balance ±5 Degrees, Insertion Loss 0.45 dB. Tags: Module with Connector. More details for MH-58 can be seen below.