The CDS6E-694/3800 from Radio Frequency Systems is a Directional Coupler with Frequency 694 MHz to 3.8 GHz, Coupling 6 dB, Coupling Variation ±0.8 dB, Directivity 20 dB, Power 200 W. Tags: Module with Connectors. More details for CDS6E-694/3800 can be seen below.