The PRF-DI10510-10 from Premier RF is a Directional Coupler with Frequency 500 MHz to 1 GHz, Coupling 10 ±1.25 dB, Coupling Variation ±1.25 dB, Directivity 25 dB Min, Power 50 Watts. Tags: Module with Connectors. More details for PRF-DI10510-10 can be seen below.