The APTDC-10-00130052-N from AmpliTech, Inc. is a Directional Coupler with Frequency 130 to 520 MHz, Coupling 10 dB, Coupling Variation ±1.2 dB, Frequency Sensitivity ±1.20 dB, Directivity 20 to 25 dB. Tags: Module with Connectors. More details for APTDC-10-00130052-N can be seen below.