The MC4052-10 from Fairview Microwave is a Directional Coupler with Frequency 4 to 8 GHz, Coupling 10 dB, Coupling Variation ±1.5 dB, Frequency Sensitivity 0.85 dB, Directivity 17 dB. Tags: Module with Connectors. More details for MC4052-10 can be seen below.