The DC3001001800GH from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 1 to 18 GHz, Coupling 30 dB, Coupling Variation ±0.2 to ±0.5 dB(Accuracy), Frequency Sensitivity ±0.9 to ±1.0 dB, Directivity 15 to 16 dB. Tags: Module with Connectors. More details for DC3001001800GH can be seen below.