The 317.2212-XN from Microwave Devices Inc. is a Directional Coupler with Frequency 4 to 12 GHz, Coupling 30 to 50 Db, Coupling Variation ±1.0 dB, Frequency Sensitivity ±0.60 dB, Directivity 15 dB. Tags: Module with Connectors. More details for 317.2212-XN can be seen below.