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Building a 9:1 UNUN With FT-140-43 Toroid.
Radio Prepper
May 21, 2020
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Testing 9:1 UNUNs, T106-2 VS FT-140-43.
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23 - The 9:1 UnUn
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DIY Simple & Effective HF RF Choke
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RANDOM WIRE ANTENNA with 9:1 UnUn home made (part 1)
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What Unun for an End Fed Antenna? (#746)