The CDS2x2-43-694/3800 from Radio Frequency Systems is a 90 Degree Hybrid Coupler with Frequency 694 to 3800 MHz, Average Power 300 W, Isolation 22 to 25 dB, Coupling 3.1 dB, VSWR 1.20:1, 1.30:1. Tags: Module with Connectors. More details for CDS2x2-43-694/3800 can be seen below.