feed lines

feed lines

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• Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.
  [ Hits: 1275 | Votes: 0 | Rating: 0 ]
• 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 ]
• Transmission Lines - About feed lines, parallel lines and coaxial lines, notes on impedance, SWR, Baluns, velocity factor and more by NZART
  [ Hits: 604 | Votes: 1 | Rating: 8 ]
• Rolling your own balanced feed lines - An article by VE1VQ that illustrate how to home made a balanced feed line
  [ Hits: 1884 | Votes: 1 | 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.
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• [TowerTalk] Coax Vs Open Wire Line - Discussion at towertalk about coax cable feed lines vs Open Wire Lines
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• 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 ]

• 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: 1182 | Votes: 3 | Rating: 7.5 ]

• Matching with one-twelfth-wavelength feed line - Matching with a half wave or wuarter wave coaxial cable is pretty well known, but an existing 1961 system to do that with two one-twelfth-wavelength transmission lines.
  [ Hits: 541 | Votes: 1 | Rating: 10 ]

• What tuners do - How atenna tuners works and what are real effects on feed lines and maximun power output by G3TXQ
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• N4EKV.COM - Antenna Tuners - Homebrew balanced-L antenna tuner. Covers 160-10m. Designed specifically for balanced feedlines.
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• Boston Fire Department Live - Listen to Boston Fire Department live scanner feed
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• 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 ]

• Velocity Factor of Coax Cables - Undertanding the velocity factor in coax cable feed lines. Meaning of the veolcity factor index related to the RF speed of a signal inside the coax cable.
  [ Hits: 169 | Votes: 2 | Rating: 10 ]

• Cost-effective ferrite chokes and baluns - In this article the author describes some new designs of ferrite loaded chokes for suppressing unwanted common mode currents at HF applied to feed lines like choke baluns, but also in the shack, applied to various coaxial, mains and data cables
  [ Hits: 868 | Votes: 5 | Rating: 6 ]

• 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 ]

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