The DC3500900900GN from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 0.9 to 9 GHz, Coupling 35 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±1 dB, Directivity 15 dB. Tags: Module with Connectors. More details for DC3500900900GN can be seen below.