https://www.hamradiobase.com/ham-radio-build-random-wire-9to1/
Random Wire Antenna with 9:1 Unun Build Guide - Ham Radio Base
Build a multi-band random wire antenna fed through a 9:1 unun and tuner, with recommended wire lengths from 29 to 84 feet for easy HF deployment.
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https://qsojourney.com/the-random-wire-antenna-magic-lengths-lengths-to-avoid-and-the-right-transformer/
Random Wire Antenna Lengths: Magic Lengths and the Right Transformer
Jul 27, 2026 - Learn which random wire antenna lengths work best for HF, which ones to avoid, and how to pick the right transformer for a simple, budget-friendly antenna.
random wire antennathe rightlengthsmagictransformer