impedance
124 links - and 2 categories
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Antennas : 160M- Isolation chokes for 160m verticals
- An article on how much impedance you really need and how small can be a chooke for top band vertical antennas by N6LF
[ Hits: 628 | Votes: 0 | Rating: 0 ]
- End Fed Half Wave Antenna
- An easy to deploy antenna, commonly considered the best solution for portable operations. Thir article includes a simple LC parallel circuit to match the impedance by IW7EHC
[ Hits: 1382 | Votes: 2 | Rating: 1.5 ]
- Twin Feed experiment
- Experimenting a low impedance feedline by G3TXQ
[ Hits: 343 | Votes: 0 | Rating: 0 ]
- Transmission line calculator
- A windows impedance calculator software by VK3UM
[ Hits: 1201 | Votes: 4 | Rating: 3.75 ]
- Antenna feed impedance
- Article on antenna feed impedance and the importance of matching RF andtennas to feeders, including notes on Radiation resistance, loss resistance, and efficiency are also detailed.
[ Hits: 430 | Votes: 1 | Rating: 10 ]
- Common-mode chokes
- Chart that present results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
[ Hits: 605 | Votes: 2 | Rating: 4 ]
- RF Chokes
- A chart presenting the results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
[ Hits: 904 | Votes: 2 | Rating: 7.5 ]
- Parallel Circular Conductor Transmission Line Calculator
- Design a parallel circular wire balanced transmission line with this online calculator.
This calculator is a tool for designing balanced transmission lines with a specific desired characteristic impedance Zc and made of parallel circular conductors of a given diameter d.
[ Hits: 631 | Votes: 6 | Rating: 4.5 ]
- Quad or Loop antennas
- Quad and loop antennas comparisons, evaluating the impedance and gain of both antennas and considerationso n horizontal loop antennas for low bands by PA0FRI
[ Hits: 1712 | Votes: 10 | Rating: 4.9 ]
- 2 Meter 5 Element Quad
- A five element quad antenna for 144 MHz DIY Project.
This 2 Meter 5 Element Quad antenna was modeled using EZNEC, with a boom from a UHF TV antenna and CPVC pipe for spreaders. Constructed for 146MHz, it exhibits a gain of 10.7dB and an impedance of 75 ohms. Real-world results surpass the HT antenna, reaching over 20 repeaters up to 75 miles away. The design, costing around $10, employs simple tools for assembly.
[ Hits: 1884 | Votes: 9 | Rating: 6.23 ]
- Messi e Paoloni
- High quality RF coax cables designed for ham radio use featuring high efficiency screening attenuation and transfer impedance.
[ Hits: 241 | Votes: 2 | Rating: 10 ]
- Array Solutions AIM 4170 Review
- Array Solutions AIM 4170 Antenna Impedance Meter, QST Review
[ Hits: 314 | Votes: 0 | Rating: 0 ]
- Zplots
- MS Excel document that allows you to plot SWR, resistance, reactance, impedance magnitude and angle and more from a variety of sources
[ Hits: 657 | Votes: 1 | Rating: 10 ]
- Measuring Zs in solid-state amplifier
- Measuring the output impedance (Zs) of solid-state broadband HF amplifiers operating in class AB eham article by ZS6BIM
[ Hits: 488 | Votes: 0 | Rating: 0 ]
- Coaxial Line Impedance Calculator
- Online coax cable impedance calculator
[ Hits: 549 | Votes: 7 | Rating: 3.57 ]
- Coax Cable impedance
- How to calculate impedance of unknown coaxial cable with a simple formula.
[ Hits: 247 | Votes: 1 | Rating: 8 ]
- Antenna Scope
- Do you want to measure antenna impedance at resonance? With
this Antenna Scope, you have a simple RF Bridge for getting
started in an exciting part of Ham Radio, building your
own Antennas that work well
[ Hits: 832 | Votes: 1 | Rating: 1 ]
- Digital HF Antenna Analyser Project
- This antenna analyzer measures complex impedance over the 1.6 - 33 MHz HF spectrum
[ Hits: 1385 | Votes: 0 | Rating: 0 ]
- Measuring line impedance with MiniVNA
- How to measure the characteristic impedance of a unknown transmission line using MiniVNA
[ Hits: 694 | Votes: 1 | Rating: 8 ]
- VNA calibration kit
- A calibration kit useful when you need known reference impedances to properly calibrate your vector network analyzers.
[ Hits: 300 | Votes: 0 | Rating: 0 ]
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