The APTDC-06-02000800-SMA from AmpliTech, Inc. is a Directional Coupler with Frequency 2 to 8 GHz, Coupling 6.5 dB, Coupling Variation ±1.0 dB, Frequency Sensitivity ±0.05 to ±1.25 dB, Directivity 18 to 22 dB. Tags: Module with Connectors. More details for APTDC-06-02000800-SMA can be seen below.