The WMC-0.5-2-20dB-S from Werbel Microwave is a Directional Coupler with Frequency 0.5 to 2 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.50 to ±0.75 dB, Directivity 23 to 26 dB. Tags: Module with Connectors. More details for WMC-0.5-2-20dB-S can be seen below.