The DC1301001800GH from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 1 to 18 GHz, Coupling 13 dB, Coupling Variation ±0.4 to ±0.7 dB (Accuracy), Frequency Sensitivity ±0.8 to ±1.0 dB, Directivity 15 to 16 dB. Tags: Module with Connectors. More details for DC1301001800GH can be seen below.