You picked up an RF directional coupler in the lab, but the ports are not labeled. What are the typical 4 ports of an RF directional coupler?
Electronics Research Inc. will show a new family of precision directional couplers at the NAB Show. The coaxial directional couplers are available for 1-5/8, 3-1/18, 4-1/16 and 6-1/8-inch coaxial ...
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