Home : Antennas : Feed Lines : Page 2
  • Choke (24)
  • Open Wire (17)
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    • Coax velocity factor - Coax Cables velocity factor article in pdf format
      [ Hits: 3931 | Votes: 14 | Rating: 4.86 ]
    • Coaxial feeder or RF coax cable - An overview of coax cable often called coaxial feeder or RF cable, used to feed antennas and deliver radio frequency power from one point to another
      [ Hits: 531 | Votes: 3 | Rating: 3.67 ]
    • Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC
      [ Hits: 902 | Votes: 0 | Rating: 0.00 ]
    • 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: 219 | Votes: 1 | Rating: 8.00 ]
    • Comparator-based RF switch - This is a concept paper, not a constuction article. There are too many variables to propose a one size fits all design. However, this paper should give you the basic idea how to do it
      [ Hits: 569 | Votes: 1 | Rating: 5.00 ]
    • Conventional Use of Transmission Line - ordinary transmission line theory
      [ Hits: 230 | Votes: 0 | Rating: 0.00 ]
    • Detuning Towers - The goal of detuning is not to avoid resonance, but rather to minimize re-radiation and/or current in the interfering structure.
      [ Hits: 682 | Votes: 1 | Rating: 10.00 ]
    • Distribute one antenna to multiple receivers - System for distribution of a receive-only antenna to multiple receivers
      [ Hits: 1502 | Votes: 1 | Rating: 5.00 ]
    • Do You Need an Antenna Tuner  pop - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
      [ Hits: 21291 | Votes: 10 | Rating: 5.30 ]
    • Effects of VSWR on Transmitted Power - By James G. Lee, W6VAT
      [ Hits: 883 | Votes: 3 | Rating: 6.67 ]
    • ERP Estimator - Calculate online, ERP in dB and dBi given PWR Frequency Coax lenght and type and antenna type
      [ Hits: 1527 | Votes: 5 | Rating: 3.80 ]
    • Feed antenna through closed window - A system to lay the antenna cable through a closed window by OE1VFW
      [ Hits: 927 | Votes: 0 | Rating: 0.00 ]
    • Feed Line Currents for Neophytes - This paper discusses the sources of feed line currents and the methods used to control them.
      [ Hits: 244 | Votes: 0 | Rating: 0.00 ]
    • Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
      [ Hits: 1661 | Votes: 1 | Rating: 1.00 ]
    • Feeder types - Article descrive the different types including coax and open-wire feeder and waveguide.
      [ Hits: 219 | Votes: 0 | Rating: 0.00 ]
    • Feeding an End-Fed Antenna  pop - End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.
      [ Hits: 20318 | Votes: 20 | Rating: 7.76 ]
    • Feeding the Beast - Transferring Radio Frequency Energy from Your Transmitter to Your Antenna by Don Keith N4KC
      [ Hits: 397 | Votes: 1 | Rating: 10.00 ]
    • G0KSC Revolutionary Yagi Antenna Feed System - New feed system for the Yagi directional beam antenna, that suppress unwanted side lobes within longer Yagi designs by G0KSC
      [ Hits: 1299 | Votes: 8 | Rating: 7.87 ]
    • Ground Problems - Collection of articles about ground systems
      [ Hits: 1148 | Votes: 2 | Rating: 8.50 ]
    • HF Antenna Switch - The purpose of this remote antenna switch was to be able to select between four different antenna combinations The unit was designed to work at RF power levels of around 100 watts by G8JNJ
      [ Hits: 814 | Votes: 0 | Rating: 0.00 ]
    • Idiot's guide to coaxial cable  pop - A very beginner's guide to coax cables. Characteristics, detailed comparison of typical coaxial cables, commonly used connectors, and a few words about SWR.
      [ Hits: 20880 | Votes: 25 | Rating: 5.36 ]
    • Inductance of Twin Lead - Calculate the inductance of twin lead online
      [ Hits: 177 | Votes: 1 | Rating: 6.00 ]
    • L Match ATU for QRP - The L match is designed for the matching of random and long wires and should not be mounted in a metallic box/case, i used a small plastic food container which was the most expensive part of the project.
      [ Hits: 4708 | Votes: 7 | Rating: 7.00 ]
    • LA6PB's split dipole - A new method of feeding a dipole with toroids.
      [ Hits: 3795 | Votes: 4 | Rating: 9.25 ]
    • Let's talk transmission lines - Don't neglect one of the most important parts of your station!
      [ Hits: 867 | Votes: 3 | Rating: 9.00 ]
    • Line Isolator System - A system view of the line isolator
      [ Hits: 1583 | Votes: 1 | Rating: 10.00 ]
    • Line Loss Calculator - Types of coax cable with rf attenuator calculator, line loss calculator form includes an antenna gain calculator
      [ Hits: 716 | Votes: 3 | Rating: 6.67 ]
    • Low loss Japanese coaxial cable - 5D-FB,8D-FB,10D-FB cables offer very low attenuation comparable to that of famous Andrews' Heliax and 8D-FB is almost half that of standard RG-213 for an equivalent diameter!
      [ Hits: 886 | Votes: 2 | Rating: 9.00 ]
    • Magic T combiners splitters - The magic "T" combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads. It is not a magic bullet.
      [ Hits: 1130 | Votes: 1 | Rating: 10.00 ]
    • Making a half wave coax cable - How to make a half l or quarter l coax cable for a specific frequency
      [ Hits: 1309 | Votes: 2 | Rating: 5.50 ]
    • Measuring Cable Loss - Improving measurement accuracy when low-power analyzers are used.
      [ Hits: 649 | Votes: 2 | Rating: 7.50 ]
    • Measuring common mode current - The nature of common mode current, and instrument for measuring common mode current in a ham station HF antenna system
      [ Hits: 208 | Votes: 1 | Rating: 10.00 ]
    • Preventing Feedline Radiation - How to handle feedline radiation issues
      [ Hits: 220 | Votes: 0 | Rating: 0.00 ]
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