The CP10K4-438008-S5S5S5 from Atlantic Microwave is a Directional Coupler with Frequency 7 to 12.4 GHz, Coupling 5 to 7 dB, Frequency Sensitivity ±0.3 to 0.5 dB, Directivity 13 to 15 dB, Average Power 50 W. Tags: Module with Connectors. More details for CP10K4-438008-S5S5S5 can be seen below.