#196: How a Directional Coupler in an SWR meter works

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16 Jun 2024

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This video describes how a dual directional coupler that is used in an SWR meter operates. It describes and demonstrates how voltages are developed that are directly proportional to the forward and reflected signals on a transmission line. The coupler shown is a common designed used by ham radio homebrewers in their SWR meter designs. It is widely published, and can be found in several issues of the ARRL Handbook. Basics of Directional Couplers: Video Notes:

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