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Feed Lines

Antenna feed lines and coax cables

(Featuring 102 resources)
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      • A T-Match ATU - An homebrew antenna tuner project
      • Install a PL-259 on an RG-8X - A better way to install PL-259 connectors on RG-8X type coax by Dan Richardson, K6MHE
      • Do You Need an Antenna Tuner - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
      • Idiot's guide to coaxial cable - A very beginner's guide to coax cables. Characteristics, detailed comparison of typical coaxial cables, commonly used connectors, and a few words about SWR.
      • Feeding an End-Fed Antenna - 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.
      • A simple SWR Meter - This article describes a simple QRP SWR meter built using readily available parts.
      • The Ultimate transmatch - Usage and benefits of transmatch. A pdf document from a QST article made available for novices and beginners by ARRL
      • Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiverís output power verses the portion of that power reflected by the antenna system By Ken Larson KJ6RZ
      • Antennas and Feedlines - Long article on antennad and feed lines
      • Wireless Antenna Connectors - A chart and picture of some of the most common connectors
      • Antenna Tuning - Tuning mobile and base antennas, measuring SWR.
      • Building High Power, High Q, Loading Coils - This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter (1.83 MHz) vertical antenna.
      • Rainbow Antenna Analyzer - A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings
      • Using Delta Matching on HF Beams - Using delta match with HF antennas design
      • 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.
      • AA3RL Transmission Line Calculator - Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs
      • Build An LF Antenna Analyzer - A Portable Low Frequency Antenna Analyzer, For those of us who like to play with antennas on the ham bands, one of the handiest tools to have around the shack is an "antenna analyzer". These gadgets combine a signal generator and standing-wave ratio (SWR) sensor in a small battery-powered unit.
      • Coax cable loss table - Coaxial cable loss in db per 100 ft.
      • RF Coaxial Connectors - RF coax(ial) connectors are a vital link in the radio spectrum. Coax connectors are often used to interface two units such as the antenna to a transmission line, a receiver or a transmitter. The proper choice of a coax connector will facilitate this interface.
      • Coax velocity factor - Coax Cables velocity factor article in pdf format
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      • Transmission Lines - About feed lines, parallel lines and coaxial lines, notes on impedance, SWR, Baluns, velocity factor and more by NZART
        [ Hits: 444 | Votes: 0 | Rating: 0.00 ]
      • Transmission lines for dummies - Myths and basic truths on transmission lines
        [ Hits: 1259 | Votes: 1 | Rating: 10.00 ]
      • Transmitting Line Condition vs. SWR Table - One another useful Table for the HAM's practice.
        [ Hits: 1022 | Votes: 5 | Rating: 5.20 ]
      • Tuning Your Antenna - Getting the best performance from your investment
        [ Hits: 1001 | Votes: 1 | Rating: 8.00 ]
      • Twin Feed experiment - Experimenting a low impedance feedline by G3TXQ
        [ Hits: 177 | Votes: 0 | Rating: 0.00 ]
      • Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiverís output power verses the portion of that power reflected by the antenna system By Ken Larson KJ6RZ
        [ Hits: 7986 | Votes: 8 | Rating: 4.75 ]
      • Using Delta Matching on HF Beams - Using delta match with HF antennas design
        [ Hits: 5152 | Votes: 4 | Rating: 3.50 ]
      • Verticals. Ground systems and some history - Article gives a good overview of the basics and reflects the accepted wisdom from BC antenna work.
        [ Hits: 1165 | Votes: 1 | Rating: 10.00 ]
      • VSWR Explained - An interesting article on Voltage Standing Wave Ratio vs Current Standing Wave Ratio by EPARA
        [ Hits: 1586 | Votes: 9 | Rating: 4.22 ]
      • Where Does the Power Go - An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line
        [ Hits: 539 | Votes: 3 | Rating: 10.00 ]
      • Why is 50 ohm coax so special - Why is 50 ohm Coaxial Line so Special Anyway?
        [ Hits: 674 | Votes: 0 | Rating: 0.00 ]
      • Wireless Antenna Connectors - A chart and picture of some of the most common connectors
        [ Hits: 6386 | Votes: 1 | Rating: 1.00 ]
        Result Page:  [<<] 1 2 3
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