The DC3006004000GH from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 6 to 40 GHz, Coupling 30 dB, Coupling Variation ±0.5 to ±0.8 dB(Accuracy), Frequency Sensitivity ±0.5 to ±0.8 dB, Directivity 11 to 13 dB. Tags: Module with Connectors. More details for DC3006004000GH can be seen below.