I needed a 1:1 balun to use with my home brew doublet but I needed it to go between the ladder line and the SGC-230 tuner so it needs to have stud terminals on both the input and the output. I took a look around and decided that making one was the best option.

It’s made using 11 turns of figure 8 twin lead on two stacked FT240-43 cores. See the pictures below…

Parts ready to go.
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Holes drilled.
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Toroid wound.
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Soldered in place.
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Potted with casting resin.
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Done.
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Installed between the ATU and doublet.
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