40 meter Moxon by SM0DTK
Building and deploying a wire Moxon rectangle for 40 meters, optimized for directional gain.
Description
SM0DTK's 40-meter Moxon antenna project details the construction and deployment of a wire Moxon rectangle, specifically dimensioned for the 7 MHz band. The resource outlines the use of a Moxon Rectangle Generator for calculating wire lengths and the fabrication of plexiglass supports for corners and the feeding point. It describes the practical challenges of elevating the antenna to approximately 14 meters using an aluminum tube and fiberglass rod, emphasizing the adjustment process for achieving the correct rectangular shape.
The article presents comparative results against a 60-meter long-wire and a full-size 40-meter ground plane antenna. The Moxon demonstrated significant directional gain towards the west, facilitating DX contacts in the Caribbean with 100 watts, while simultaneously reducing QRM from strong eastern European stations. The SWR was reported as perfect without the need for an antenna tuner, validating the design's effectiveness for targeted signal enhancement and interference mitigation.