This is an adaptation of a specialized design researched by Dr. Jerry Sevick (W2FMI). It combines a 12.5 ohm, 1:1 balun with a 1:4 unun for final transformation to 50 ohms. Used anywhere there is a need to transform 12.5 ohms balanced to 50 ohms unbalanced. This balun features hand made custom 12.5 ohm coax for excellent isolation and transformation. Great for matching low impedance antennas such as Cobwebs.
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