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An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it

An HF multiband trapped antenna in french

This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts with limited space. Each of the parallel circuits (trap) behaves like an isolator on its resonant frequency.

Building an 80-160 meter antenna in a small garden (9m x 14m) involves creative solutions due to space constraints. This project outlines the construction of a trapped 80-160 meter vertical dipole, utilizing a crank-up tower and an 11-meter fiberglass pole. The design prioritizes minimal visibility, ease of construction, and cost-effectiveness, achieving effective operation despite limited space.

This PDF document provides detailed information on the design, construction, and tuning of trapped vertical antennas with radials for ham radio operators. It covers the theory behind trapped antennas, practical considerations for installation, and tips for optimizing performance. Whether you are a beginner looking to build your first HF antenna or an experienced operator seeking to improve your station setup, this guide offers valuable insights and instructions. By understanding the principles outlined in this document, hams can enhance their operating experience and make the most of their radio communication capabilities.