antenna impedance51 links - and 1 categories
- W5GI Mystery Antenna
- 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: 127438 | Votes: 110 | Rating: 7.95 ]
- Dual band 6m/4m Yagi
- This antenna was optimized with the goal to minimize any changes in 6jxx6 impedance/lobes. The result is a 7 el on 70 MHz with a little loss of gain comparing with the other monobands of the same lenght.
[ Hits: 1858 | Votes: 4 | Rating: 7.75 ]
- The Hairpin Monopole Antenna
- Numerous questions have been raised concerning its performance, namely How can a balanced structure radiate? and What is its impedance? This article will attempt to answer these questions.
[ Hits: 1417 | Votes: 2 | Rating: 8.50 ]
- 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.
[ Hits: 20182 | Votes: 20 | Rating: 7.76 ]
- 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: 1122 | 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: 323 | Votes: 0 | Rating: 0.00 ]
- The Coaxial Line
- Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses
[ Hits: 769 | Votes: 0 | Rating: 0.00 ]
- 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: 1781 | Votes: 1 | Rating: 1.00 ]
- Antenna Impedance measurement
- When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this
[ Hits: 1259 | Votes: 6 | Rating: 2.67 ]
- From Transmitter to Antenna
- A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH
[ Hits: 1030 | Votes: 0 | Rating: 0.00 ]
- 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: 1376 | Votes: 0 | Rating: 0.00 ]
- 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: 1238 | Votes: 1 | Rating: 8.00 ]
- Multi Band Antenna Traps
- These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.
[ Hits: 4682 | Votes: 3 | Rating: 6.00 ]
- K0BG'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: 4518 | Votes: 9 | Rating: 8.56 ]
- Smith chart
- Match & display imped of antennas, can graphically visualize and compare two sets of measured impedances simultaneously.
[ Hits: 3411 | Votes: 9 | Rating: 4.12 ]
- 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: 1376 | Votes: 2 | Rating: 1.50 ]
- 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: 1082 | Votes: 6 | Rating: 4.83 ]
- W9DMK Software
- Various radio related software, including some antenna analysis, and impedance calculators.
[ Hits: 2666 | Votes: 5 | Rating: 6.00 ]
- 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: 4487 | Votes: 2 | Rating: 9.50 ]
- Impedance Bridge
- by Harry Lythall SM0VPO
[ Hits: 4210 | Votes: 11 | Rating: 7.38 ]
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