The CD-1-2000-18000-20-30-SF-SF-SF / 011053 from DETI Microwave is a Directional Coupler with Frequency 2 to 18 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.5 dB, Directivity 12 dB. Tags: Module with Connectors. More details for CD-1-2000-18000-20-30-SF-SF-SF / 011053 can be seen below.