antenna construction

antenna construction

Pages: [prev] 1 2 3 4 5 6 7 8 [next]

• Build a Lightweight 15m Yagi Antenna: Simple Design for Impressive Performance - In this article, Steve G0UIH presents a straightforward guide for constructing a lightweight 15m 3 Element Yagi antenna with impressive performance metrics. With a focus on ease of construction and efficiency, the design boasts a nearly 8.2dbi forward gain and 30db front to back ratio. Utilizing readily available materials and a hairpin match for impedance matching, this Yagi offers broad bandwidth and simple tuning for optimal operation across the 15m band.
  [ Hits: 70 | Votes: 0 | Rating: 0 ]

• 1296 MHz Bi-Quad Antenna - Construction of a 23 cm band, 1296 MHz Bi-Quad Antenna
  [ Hits: 87 | Votes: 0 | Rating: 0 ]
• HB9CV Antenna for 23 cm - Construction of a QRP 23cm HB9CV antenna 1296 MHz
  [ Hits: 59 | Votes: 0 | Rating: 0 ]
• 23cm Yagi antenna - Solid Brass 6el 23cm Yagi antenna for SOTA. Construction of a rugged solid brass DL6WU yagi ready for the SOTA backpack for 1.296 GHz
  [ Hits: 62 | Votes: 1 | Rating: 9 ]

• Durable 2-Meter Yagi Antenna: PVC and Window Line Construction - Discover the creation of a robust 2-meter, 3-element Yagi antenna using PVC pipe and window line. Designed for durability and portability, this innovative Yagi demonstrates enhanced signal strength, making it ideal for SSB and CW operation on the go.
  [ Hits: 138 | Votes: 0 | Rating: 0 ]

• VDA Antenna for 30m  ^new - This project documents the construction and enhancement of a 30m Vertical Dipole Array (VDA) antenna inspired by Remco 7QNL article. Initial design utilized an 18m Spiderbeam pole and a 4m boom. Improvements included a lighter boom structure using fishing rods and a revised coaxial arrangement for enhanced mechanical stability.
  [ Hits: 38 | Votes: 0 | Rating: 0 ]

• Enhancing Performance with a Cage Dipole for Six Meter Band - Explore the design and testing of a cage dipole antenna for 6 meters. Through innovative construction, witness a remarkable 77% increase in bandwidth and improved impedance characteristics.
  [ Hits: 76 | Votes: 0 | Rating: 0 ]

• The Reversible BOGs - The author struggled with receiving antennas on his property. After a standard Beverage on Ground (BOG) antenna failed, he built a Reverse Beverage on Ground (RBOG) using telephone cable. He details construction and testing, finding the RBOG outperformed other antennas in noise level, signal strength, and reception pattern. Software modeling helped optimize the antenna length. Unfortunately, the project ended when telephone cable from the second RBOG was stolen.
  [ Hits: 22 | Votes: 0 | Rating: 0 ]
• Reversible RG6 Beverage Antenna - The author describes building a reversible Beverage antenna for low-band receive applications. He details the construction process, challenges faced, and initial performance testing. The antenna uses coaxial cable and transformers for switching direction. Overall, the author is pleased with the results and plans to build additional reversible Beverages.
  [ Hits: 21 | Votes: 0 | Rating: 0 ]

• Can Antenna Calculator - Online calculator and Construction of the can antenna
  [ Hits: 132 | Votes: 0 | Rating: 0 ]

• 160-80-40 Metre Trapped V-Dipole - A Trapped dipole inverted V antenna for lower HF Bands. Construction details are for temporary installation. Permanent installations will require additional ruggedising and waterproofing however the basic electronics concepts remain the same. This project includes SWR plots for the three bands and pictures details of the homemade traps.
  [ Hits: 109 | Votes: 0 | Rating: 0 ]

• Multi-Band End-Fed Antenna Design for Limited Space  ^new - This document details the construction of a multi-band end-fed antenna, suitable for situations with limited space for larger antennas. The design utilizes a 1:49 to 1:60 impedance transformer to match a half-wave wire antenna fed at one end. Compared to a traditional dipole, this antenna resembles a highly unbalanced Windom antenna with one very long leg and a virtual short leg. The design eliminates the need for radials but relies on the coax cable shield for grounding. The document recommends using at least 10 meters of coax and installing a common mode filter at the entry point to the shack for improved performance.
  [ Hits: 76 | Votes: 0 | Rating: 0 ]

• Three-Element Hex Beam Project - Building the Three-Element Hex Beam. A project and construction phase of an HF hex-Beam antenna using trees to hang the antenna and a Channel Master antenna rotator.
  [ Hits: 306 | Votes: 6 | Rating: 8.67 ]

• Choosing the Right Aluminum Stock for Antenna Building - Building an efficient antenna begins with selecting the right aluminum stock. This article provides a comprehensive guide to sourcing aluminum materials for antenna construction. It covers different aluminum grades, their tensile strengths, tempering options, and their suitability for various antenna components. The article also recommends reputable suppliers in the UK, making it a valuable resource for antenna builders seeking durable and high-performance materials.
  [ Hits: 76 | Votes: 0 | Rating: 0 ]

• Magnetic Loop Antenna Builds and Autotuning Advancements - Explore two magnetic loop antenna constructions, utilizing a 6-foot and a 12-foot square loop. Accompanied by a detailed description, the 6-foot loop features a built-in stepper motor control circuit, while the 12-foot loop incorporates a separate loop controller. Efficiency, tuning ranges, and the innovative autotuning solution using a microcontroller are discussed, offering insights into overcoming the antenna's narrowband limitations.
  [ Hits: 67 | Votes: 0 | Rating: 0 ]

• Moxon Mania - Building the Ultimate 4-Band Moxon Antenna - The article details the design and construction of a four-band Moxon beam by a radio amateur. The beam, mounted atop a rooftop tower, aimed for gain over a dipole on 20 meters, cost under $500, and included additional bands. The design features fiberglass spreaders, four bands (20/15/10/6 meters), and a single feedpoint. The construction involved computer modeling, NEC source code, and specific dimensions. The article outlines the assembly, materials, and tuning process, including in-situ adjustments for optimal performance. Despite initial challenges, the beam improved signal strength and facilitated contacts on multiple bands, marking it as the best HF antenna the author has owned.
  [ Hits: 96 | Votes: 0 | Rating: 0 ]

• Portable Half-Square Antenna: - The author explores a portable version of the half-square antenna, typically a single-band structure. Using a 9:1 unun for versatility, they describe construction with speaker wire, deployment using collapsible poles, and field tests, achieving successful contacts on multiple bands. The article suggests efficient matching methods and concludes with the antenna's integration into the author's portable options.
  [ Hits: 126 | Votes: 0 | Rating: 0 ]

• Efficient 2-Element Quad Antenna for 2m - A detailed guide presents a simple 2-element quad antenna for 2m, offering ease of construction, portability, and efficient performance across the 144-148 MHz band. The design allows quick disassembly for storage and features adjustable polarization, making it ideal for various applications, including transmitter hunting and SSB operations.
  [ Hits: 62 | Votes: 0 | Rating: 0 ]

• Build a W3DZZ Antenna - The purpose of this construction is to enable the realization of an HF antenna called W3DZZ with minimal equipment and low cost. It allows traffic on the bands 3.5 / 7/14/21 and 28MHz.
  [ Hits: 219 | Votes: 1 | Rating: 1 ]

• DIY Yagi Antenna - This article describes the phases for the construction of a Yagi antenna. The calculations of the parameters are made using 4NEC2 software. This type of antenna is used for transmissions and receptions of electromagnetic waves. The project shown here refers to the frequency of 433.92 MHz.
  [ Hits: 109 | Votes: 4 | Rating: 3.5 ]

Pages: [prev] 1 2 3 4 5 6 7 8 [next]