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[OE5JFE]

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EFHW Transformer Toroid T-6 (Yellow) or T-2 (Red) or FT-43

Hi…I’ve followed many of the EFHW Transformer postings…and I have 3 questions I don’t recall seeing information explaining when to use one of the 3 toroid options… I see T-6 (yellow) seems to be the predominate variety…but I also see postings for T-2 (red)… What scenarios make sense to pick T-6 (yellow) vs. T-2 (Red) toroid? – 1-Frequency? – Multi-Frequency with a variable capacitor (ex: 17m-40m) ? – QRP vs. QRO ? I think understand mix FT-43 is for Broadband with a fixed capacit…