Hf Antennas For All Locations Moxon Pdf 【Simple】

Pro Tip: Build the antenna 3-5% longer than calculated. You can always shorten wire. You cannot stretch it. The Moxon is sensitive to corner angles (90 degrees is ideal).

You do not need an antenna analyzer worth $1,000. You need a calculator and a tape measure. The classic formula for a Moxon rectangle (subject to a velocity factor of 1.0 for air) is:

The Challenge: No towers, no visible large wires, “property aesthetics” clauses. The Moxon Solution: Build a stealth Moxon using dark enameled magnet wire (#14 or #12 AWG) framed by small diameter PVC or fiberglass poles. Mount it horizontally on a 20-foot telescoping flagpole or vertically against a wooden fence painted to match. hf antennas for all locations moxon pdf

The Challenge: No holes in walls, no ground radials, high noise from switching power supplies. The Moxon Solution: Build a small magnetic loop? No – build a portable Moxon for 15m or 10m and mount it on a photography light stand inside a balcony or on a push-up mast clamped to a deck railing. Because the Moxon has deep nulls on the sides (off the tips of the rectangle), you can orient it to null out a noisy neighbor’s plasma TV or a specific apartment building’s switching supply.

You have the theory, but you need the blueprint. A simple Google search often returns broken links or outdated calculations. Here is where to find legitimate, tested PDF resources: Pro Tip: Build the antenna 3-5% longer than calculated

Warning: Avoid PDFs that require you to pay $19.99 for "secret blueprints." The Moxon is open-source hardware. The math is public. Anyone selling a single PDF is likely just repackaging Les Moxon's 1982 RSGB article.

The Challenge: No ground, no radials, noisy neighbors. The Moxon Solution: A vertical Moxon. Build the rectangle for 10m or 12m and mount it vertically on a fiberglass painter's pole. The high F/B ratio rejects noise from the apartment building behind you, while the forward lobe punches through to Europe or Japan. Warning: Avoid PDFs that require you to pay $19

| Parameter | Value (wire dia. ≈2 mm) | |---------------------|--------------------------| | Driven element A | 10.20 m (33.5 ft) | | Reflector element B | 10.65 m (34.9 ft) | | Element spacing | 2.38 m (7.8 ft) | | Wire gauge | 14 AWG (1.6 mm) copper | | Feedpoint Z | 50–65 Ω | | Boom length | 2.38 m (minimal) |

(Cut lengths are approximate — always trim for lowest SWR at your desired frequency.)