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76 links and 2 categories about impedance on dxzone.com

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Antennas : 20M
  • W5GI Mystery Antenna  pop - W5GI Mystery Antenna is a multi-band wire antenna that performs exceptionally well even though it confounds antenna modeling software. This antenna covers 80 to 6 meters with low feed point impedance and will work with most radios, with or without an antenna tuner. It is approximately 100 feet long, can handle the legal limit, and is easy and inexpensive to build. It is similar to a G5RV but a much better performer especially on 20 meters.
    [ Hits: 113158 | Votes: 85 | Rating: 6.40 ]
Antennas : Baluns
  • High impedance baluns - Introduction with some background on balun types
    [ Hits: 692 | Votes: 0 | Rating: 0.00 ]
Antennas : Feed Lines
  • SWR: Maximum allowable VSWR - VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools
    [ Hits: 1056 | Votes: 3 | Rating: 3.33 ]
  • Antenna Transmission Line Power Splitters - Several ways of splitting power to feed two like (50 ohm terminal impedance) antennas.
    [ Hits: 247 | Votes: 0 | Rating: 0.00 ]
  • Transmission Lines - About feed lines, parallel lines and coaxial lines, notes on impedance, SWR, Baluns, velocity factor and more by NZART
    [ Hits: 442 | Votes: 0 | Rating: 0.00 ]
Antennas : Feed Lines : Choke
  • Eliminating TX RF Feedback Problems - Malfunction of transceivers due to stray RF pickup is a common problem, especially when using end-fed antennas, high-impedance feedlines, or a poor ground counterpoise
    [ Hits: 1602 | Votes: 1 | Rating: 1.00 ]
Antennas : Moxon
  • The Moxon Antenna - The Moxon antenna is sort of a two element yagi with the elements folded and spaced to eliminate the need for an impedance match.
    [ Hits: 1241 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory
  • SWL antenna distribution system - A methodology for connecting multiple LF/MF/HF receivers to a single antenna via readily available and inexpensive 75-ohm TV cable. Custom made baluns and splitters provide impedance matching and prevent interaction between receivers.
    [ Hits: 1204 | Votes: 1 | Rating: 8.00 ]
Antennas : Tuners Operating Modes : Mobile
  • KBG's ham radio mobile operator web site - This site is dedicated to mobile amateur radio operators, old and new alike. Whether you are into HF, or VHF operation, I trust the information presented will increase your enjoyment of our great hobby. With safety as a byword, there are articles on amplifiers, antennas, bonding, impedance matching, installing hardware, mobile equipment, noise and RFI abatement, wiring, and much more. I do my best to keep these articles up to date, and easy to follow.
    [ Hits: 4285 | Votes: 9 | Rating: 8.56 ]
Software : Antenna analysis
  • Smith chart - Match & display imped of antennas, can graphically visualize and compare two sets of measured impedances simultaneously.
    [ Hits: 3293 | Votes: 9 | Rating: 4.12 ]
  • AEA - Wireless software - AEA Wireless Director Software Series turns PC's (running Windows 95/98/2000/ME or NT) into powerful tools that expand the use and power of SWR, Return Loss and Complex Impedance Analyzers.
    [ Hits: 2279 | Votes: 6 | Rating: 5.00 ]
  • SmartSmith - A smarter version of the Smith Chart program. It allows you to dynamically generate impedance point plots as you configure each design element of an impedance matching network. Has an extensive Help file with a Wizard that tells you what steps to take in designing a matching network for a given load impedance. Complete Windows installation kit by w9dmk
    [ Hits: 1756 | Votes: 7 | Rating: 1.43 ]
  • XLZIZL by AC6LA - XLZIZL is an Excel application that analyzes the components of an antenna feed system, including transmission lines, stubs, baluns, and tuners. Calculations include impedance transforms, SWR and reflection coefficient, power loss, voltage and current standing waves, stress on tuner components, network attenuation (S21), and return loss Analysis results are available in worksheet format and in five different chart formats, including Smith charts.
    [ Hits: 1226 | Votes: 1 | Rating: 2.00 ]
Software : Circuit Design
  • atlc - Arbitrary Transmission Line Calculator. - Unix or linux programme atlc calculates the impedance of electrical transmission lines of totally arbitrary cross section.
    [ Hits: 985 | Votes: 9 | Rating: 6.44 ]
  • Networks - Calculate impedance matching networks by YU1AW
    [ Hits: 803 | Votes: 2 | Rating: 10.00 ]
  • MatchNet - This program calculates impedance matching for tube and solid-state PA, LNA, antenna match-box, interstage impedance matching and all other impedance matching in electronic and telecommunication.
    [ Hits: 987 | Votes: 6 | Rating: 4.83 ]
Software : Collections
  • W9DMK Software - Various radio related software, including some antenna analysis, and impedance calculators.
    [ Hits: 2530 | Votes: 4 | Rating: 5.00 ]
Software : Linux
  • Smith chart calculator - linSmith is a Smith Charting program, mainly designed for educational use. It allows defining multiple load impedances (different frequencies), and adding components (discrete components and line sections) in series and parallel. It plots the impedances on the screen, shows the values in table format, and is able to generate publication quality Postscript output.
    [ Hits: 3684 | Votes: 28 | Rating: 3.92 ]
Software : Oscilloscope
  • Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.
    [ Hits: 16418 | Votes: 7 | Rating: 4.71 ]
Software : Utilities
  • RevLoad - This graphics-intensive program reveals the load on the output of a matching-network, based on measurements of the components in that network. Adjust the network (tuner) for a flat input, measure or look up the network component values and you will immmediately see the R and jX values of the load on the network, presented as both a schematic with the component values and as a Smith Chart normalized to the specified system impedance.
    [ Hits: 468 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Audio
  • Bass EQ Pre Amp - A Bass Eq Pre amplifier for high impedance PU by ON6MU
    [ Hits: 221 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Duplexers
  • AA5TB Antenna Coupler / SWR Bridge - Wire antennas requires a special coupling network to properly couple my 50 ohm coax to the antenna's high impedance (5000 ohms)
    [ Hits: 4173 | Votes: 2 | Rating: 9.50 ]
Technical Reference : Homebrew
  • Impedance Bridge - by Harry Lythall SM0VPO
    [ Hits: 4025 | Votes: 11 | Rating: 7.38 ]
Technical Reference : Vector Network Analyzer
  • Build A Vector Network Analyzer - The VNA (vector network analyzer) is an essential tool for measuring the complex impedance of a circuit at a given frequency. Article on how to build a Impedance analyzer.
    [ Hits: 694 | Votes: 0 | Rating: 0.00 ]
  Result Page:  1 2 3 4 [next]
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