The DC1000600400GA from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 0.6 to 4 GHz, Coupling 10 dB, Coupling Variation ±0.8 dB, Frequency Sensitivity ±0.8 dB, Directivity 18 dB. Tags: Module with Connectors. More details for DC1000600400GA can be seen below.