The CPL-0510-30 from Taylor Microwave, Inc. is a Directional Coupler with Frequency 500 MHz to 1 GHz, Coupling 30 ± 1.25 dB, Coupling Variation ±1.25 dB, Frequency Sensitivity ± 0.60 dB, Directivity 20 dB. Tags: Module with Connectors. More details for CPL-0510-30 can be seen below.