The DC1004001800GA from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 4 to 18 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.8 dB, Directivity 12 dB. Tags: Module with Connectors. More details for DC1004001800GA can be seen below.