The RMCO30.1000Sf from Response Microwave Inc is a Directional Coupler with Frequency 500 MHz to 1 GHz, Coupling 30 +/- 1.5 dB, Coupling Variation 1.5 dB, Directivity 15 dB, Average Power 100 W. Tags: Module with Connectors. More details for RMCO30.1000Sf can be seen below.