antenna feed lines

antenna feed lines

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Antennas : Feed Lines

• Feeding the Beast - Transferring Radio Frequency Energy from Your Transmitter to Your Antenna by Don Keith N4KC
  [ Hits: 522 | Votes: 1 | Rating: 10 ]
• Antenna Feed Lines for Portable Use - Why twinlead isn't necessarily a low loss feed line.
  [ Hits: 1532 | Votes: 2 | Rating: 10 ]
• Antenna current meter - How to measure antenna feed balanced lines currents
  [ Hits: 757 | Votes: 3 | Rating: 8.67 ]
• Common mode currents - Common mode currents can flow in all sorts of systems, not just antenna feed lines. This article explain how Common mode noise can be isolated from the desired signal
  [ Hits: 316 | Votes: 1 | Rating: 8 ]
• Choosing Feed Lines - Choosing the right feed line for your antennas, is a critical decision to your station setup.
  [ Hits: 695 | Votes: 0 | Rating: 0 ]
• ARRL - About Feed Lines - The feed line (also called the transmission line) is the RF power conduit between your radio and your antenna. The quality of your feed line is critical to your station. ARRL Article that explains differences among various commonly used feed line systems
  [ Hits: 88 | Votes: 2 | Rating: 6.5 ]

• Some secrets of Common Mode Chokes revealed - This is a small collection of K9YC info and my experiences. Problems by feed lines of 1/2 lambda length. CMCs in transmitting and receiving systems. Antenna unbalance, Maximal allowed power, Choke winding tips.
  [ Hits: 174 | Votes: 1 | Rating: 10 ]

• G5RV Antenna by W8JI - Notes and information about G5RV antenna, analysis of short feed lines and relation with SWR
  [ Hits: 1589 | Votes: 4 | Rating: 6.3 ]

• 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 ]

• Tuning OCF L-Dipoles - The behavior of a straight dipole and its L-form is examined in terms of impedance and SWR. By adjusting the feed point or bending angle, impedance variation is observed. Impedance shifts symmetrically as the feed point deviates, leading to recommendations for optimal ratios. Model simulations aid in understanding and fine-tuning, crucial for achieving a 50 Ohm match. Practical tuning guidelines ensure efficient antenna performance.
  [ Hits: 29 | Votes: 0 | Rating: 0 ]

• All About Antennas - A free five part series on antennas that covers many aspects of antennas, from radio wave propagation, to feed lines, type of antennas, connectors, adaptors and antenna switches by Bob Grove, publisher of Monitoring Times
  [ Hits: 1180 | Votes: 3 | Rating: 7.5 ]
• Practical Antenna Modeling with 4NEC2 - Presentation about Practical Antenna Modeling Using the NEC Codes with examples of HF wire antennas and 4NEC2. How to define and edit the models, Running the simulations, Work some examples, Variables usage, Deal with Feed Lines and ground
  [ Hits: 480 | Votes: 0 | Rating: 0 ]

• N4EKV.COM - Antenna Tuners - Homebrew balanced-L antenna tuner. Covers 160-10m. Designed specifically for balanced feedlines.
  [ Hits: 4728 | Votes: 2 | Rating: 10 ]

• Howell Communications, Inc. - Family owned and operated tower service company. Tower installation, Microwave and Broadcast Antenna Installation, Installation of Feed Lines, Ice Bridge Installation, Lightning Protection, Site Inspections, Alignment of Microwave Paths, Flash Testing, Sweep Testing, Tower Lighting and Relamping.
  [ Hits: 530 | Votes: 0 | Rating: 0 ]

• SWR and Amateur Radio Antenna Tuners - Undestanding and measuring SWR, Standing Wave Ratio in antenna feed lines. This article also introduce basic concepts and usage guidelines of amateur radio antenna tuners
  [ Hits: 219 | Votes: 2 | Rating: 9.5 ]

• R.F. Current Meter - This R.F. current meter was developed to assist in measuring line currents in balance feed lines as used in the All Band HF Antenna.
  [ Hits: 626 | Votes: 1 | Rating: 1 ]