The CPL-2040-6 from Taylor Microwave, Inc. is a Directional Coupler with Frequency 2 to 4 GHz, Coupling 6 ± 1.00 dB, Coupling Variation ±1 dB, Frequency Sensitivity ± 0.60 dB, Directivity 20 dB. Tags: Module with Connectors. More details for CPL-2040-6 can be seen below.