The DC3002004000GH from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 2 to 40 GHz, Coupling 30 dB, Coupling Variation ±0.2 to ±0.7 dB(Accuracy), Frequency Sensitivity ±0.7 to ±1 dB, Directivity 11 to 15 dB. Tags: Module with Connectors. More details for DC3002004000GH can be seen below.