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50:450 ohm (9:1) Balun or Unun Core Kit, .5-32 MHz, 1000 watts PEP, end fed/Ladder Line, T2FD antenna - $10 and Under Items - Palomar Engineers®
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Amazon.com: Balun One Nine v1 - Tiny Low-Cost 1:9 HF Antenna Balun and Unun with Antenna Input Protection for Ham It Up, RTL-SDR, HackRF and Other HF-Capable Radios. Great for DIY Dipole
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Balun Frequency Band Long Wire 1:9 Balun Frequency Band Long Wire HF Antenna RTL-SDR Antenna Balun One Nine Tiny - AliExpress
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