The 3222-16 from Narda-MITEQ is a Directional Coupler with Frequency 1 to 18 GHz, Coupling 16 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.5 dB, Directivity 12 to 15 dB. Tags: Module with Connectors. More details for 3222-16 can be seen below.