The C1-C88-06xx from RD Microwaves is a Directional Coupler with Frequency 555 MHz to 6 GHz, Coupling 6 dB, Coupling Variation ±1.1 dB (Flatness), Average Power 300 W, Peak Power 1 kW. Tags: Module with Connectors. More details for C1-C88-06xx can be seen below.