The A3245-20 from Atlantic Microwave is a Directional Coupler with Frequency 2.6 to 5.2 GHz, Coupling 20 dB, Coupling Variation ± 1.25 dB, Frequency Sensitivity ± 0.75 dB, Directivity 20 dB. Tags: Module with Connectors. More details for A3245-20 can be seen below.