The CD-1-2000-4000-6-30-SF-SF-SF / 011052 from DETI Microwave is a Directional Coupler with Frequency 2 to 4 GHz, Coupling 6 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.5 dB, Directivity 22 dB. Tags: Module with Connectors. More details for CD-1-2000-4000-6-30-SF-SF-SF / 011052 can be seen below.