The DC1027003100GA from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 27 to 31 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.7 dB, Directivity 12 dB. Tags: Module with Connectors. More details for DC1027003100GA can be seen below.