The 4194 Series from ARRA Inc. is a Directional Coupler with Frequency 2.0 to 4.0 GHz, Coupling 6, 10, 20, 30 ±1.25 dB, Coupling Variation 1.25 dB, Directivity 22 dB, Power 50 W. Tags: Module with Connectors. More details for 4194 Series can be seen below.