The APTDC-10-01002000-SMA from AmpliTech, Inc. is a Directional Coupler with Frequency 1 to 20 GHz, Coupling 10 dB, Coupling Variation ±1.5 dB, Frequency Sensitivity ±0.6 to ±1.8 dB, Directivity 10 to 14 dB. Tags: Module with Connectors. More details for APTDC-10-01002000-SMA can be seen below.