The DC10-170220SF from Corech Microwave is a Directional Coupler with Frequency 17 to 22 GHz, Coupling 10 dB, Coupling Variation ±0.7 dB (Balance), Directivity 12 dB, Average Power 30 W (CW). Tags: Module with Connectors. More details for DC10-170220SF can be seen below.