The APTDC-10-00500200-SMA from AmpliTech, Inc. is a Directional Coupler with Frequency 500 to 2000 MHz, Coupling 10 dB, Coupling Variation ±1.0 dB, Frequency Sensitivity ± 0.75 to ±1 dB, Directivity 23 to 25 dB. Tags: Module with Connectors. More details for APTDC-10-00500200-SMA can be seen below.