The DC1606004000GH from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 6 to 40 GHz, Coupling 16 dB, Coupling Variation ±0.3 to ±0.8 dB(Accuracy), Frequency Sensitivity ±0.4 to ±0.8 dB, Directivity 11 to 15 dB. Tags: Module with Connectors. More details for DC1606004000GH can be seen below.