The C2-A44 from RD Microwaves is a Dual Directional Coupler with Coupling 20 to 30 dB, Coupling Variation ±0.5 dB, Frequency 400 MHz to 2.9 GHz, Peak Power 5 KW, Average Power 500 W. Tags: Module with Connectors. More details for C2-A44 can be seen below.