2-Element Single Mast Wire Beam with 4 Switchable Directions. Post #1171.
2-Element Single Mast Wire Beam with 4 Switchable Directions (http://www.eham.net/articles/39030). Accessed on 26 June 2017, 15:00 hrs, UTC. Authors: Chavdar Levkov, Jr. (LZ1ABC) and Chavdar Levkov (LZ1AQ). Please click link to read the full article. Comment: If you can't erect a tower and a multi-element 20 meter beam on your property, you may want to use this idea from Chavdar Levkov, Jr. (LZ1ABC) and Chavdar Levkov (LZ1AQ). This 2-element single mast wire beam for 20 meters offers high performance, directivity, and reasonable cost. The Levkov's present an easy-to-understand, thoroughly documented tutorial on the design, construction, and use of this wire antenna. The Levkov's provide plenty of photos, diagrams, test results, and construction tips to make this project a success. The post is divided into several bite-sized discussions: Antenna description Switcher schematics RF transformers Feeders Control Cable Capacitors Relays Losses Erect...