Hf Antennas For All Locations Moxon — Pdf Hot |work|
Whether this will be a or a portable field setup .
The total front-to-back length of the antenna structure.
Do not just grab any random Moxon calculator online. Many web calculators use the wrong spacing formula. Stick to the original PDF data from G6XN.
If you have searched for you have stumbled upon the single most effective solution for confined spaces. The Moxon rectangle is not a compromise antenna; it is a directive antenna that defies its small size. And the reason the "PDF" is "hot" is simple: the original design summaries by Les Moxon, G6XN, are gold-standard engineering, easily downloaded, printed, and built in a single afternoon. hf antennas for all locations moxon pdf hot
Total length of the driven element's straight back section. B: Length of the driven element's turned-in sides.
HF antennas are a crucial part of amateur radio and shortwave listening. Moxon antennas are a popular choice for HF communication, offering a high gain and directional radiation pattern. However, they're not the only option, and there are many other types of HF antennas that can be used in different locations. By considering factors such as available space, desired frequency range, and level of noise, you can choose the right HF antenna for your location.
The antenna width is reduced to roughly 70% of a standard half-wave dipole. Whether this will be a or a portable field setup
Downloading .NEC files lets you simulate your exact backyard topography using software like EZNEC to predict real-world takeoff angles and gain before cutting any wire. Step-by-Step DIY Construction Tips
While the impedance is close to 50 ohms, adding a quality 1:1 current balun or a choke at the feedpoint is vital to prevent RF from traveling back down the outside of your coaxial cable shield.
The rectangular shape allows for incredibly robust mechanical construction. When built with marine-grade aluminum tubing or heavy-duty fiberglass spreaders, a Moxon resists high winds and salt corrosion, making it an excellent choice for sailboats or coastal field stations. Key Design Parameters and Dimensions Many web calculators use the wrong spacing formula
For frequencies from 10 meters down to 20 meters, a wire Moxon can be suspended from wooden attic rafters using non-conductive heavy-duty monofilament or zip ties. Keep the elements away from home wiring and foil insulation backings.
If SWR is high at resonance, your feedpoint impedance is too high (100-120 ohms). Add a 50-ohm hairpin match.
Your target (e.g., 20 meters, 10 meters, 6 meters)
Stop agonizing over limited space. Download the Moxon cutting chart. Build it this weekend. You will never want to put up a plain dipole again.
Maximizing HF Performance Everywhere: The Ultimate Moxon Antenna Guide