react

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react

23 links

Antennas : Bazooka
  • Double Bazooka Antenna performance - The Double Bazooka Dipole is a half wave dipole with an attempt at compensation of the reactance change that occurs around resonance for a half wave dipole.
    [ Hits: 3160 | Votes: 3 | Rating: 4.67 ]
Antennas : Dipole
  • An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX
    [ Hits: 8726 | Votes: 5 | Rating: 6 ]
Antennas : Feed Lines
  • 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
    [ Hits: 5332 | Votes: 16 | Rating: 6.88 ]
Antennas : G5RV
  • Low reactance multiband center feed wires - An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance
    [ Hits: 2994 | Votes: 5 | Rating: 8.8 ]
Antennas : Theory
  • VSWR Reactive Power - Many antennas and antenna designers neglect the true cause of loss. The major problem using short antennas is the reactance, not the length
    [ Hits: 225 | Votes: 1 | Rating: 6 ]
  • Designing Vertical Aerials - If you want to design vertical antennas you can find all theory and formulas used to model a vertical aerial calculating capacitance, reactance, building the inductor and calculating resistances. Includes an excel spreadsheet to calculate efficiency.
    [ Hits: 576 | Votes: 0 | Rating: 0 ]
Antennas : Theory : Impedance matching
  • Antenna Matching - Antennaa matching basics, matching input impedance, reactance vs. SWR, info on inductive matching and UNUN Matching systems. Capacitive Matching Odds & Ends by K0BG
    [ Hits: 1781 | Votes: 5 | Rating: 7 ]
DX Resources : Contest : Resources
  • Rick Tavan - Radio Contesting - When I tell friends that I enjoy amateur radio contesting, their reaction is usually a quizzical stare. "What's that?" It is hard to explain in the span of a cocktail conversation, so here is the answer.
    [ Hits: 633 | Votes: 1 | Rating: 8 ]
Ham Radio : ARES RACES
  • CREST Radio Emergency Associated Communication Teams - CREST Communications REACT Team #4252 has been an active member of the community for almost 30 years and is one of the largest REACT Teams in the United States.
    [ Hits: 802 | Votes: 1 | Rating: 10 ]
  • Dallas County REACT - Dallas County REACT, Inc., is a nonprofit organization of citizens interested in radio communications and committed to public service.
    [ Hits: 413 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : North America : USA : Texas
  • San Antonio Radio Club - San Antonio Texas area radio organizations, such as Ham Clubs, REACT Teams, etc.
    [ Hits: 760 | Votes: 2 | Rating: 10 ]
Manufacturers : Microwave
  • Reactance Labs - Reactance Labs was started by Tony Long KC6QHP to sell kits and products for builders of amateur radio microwave transceivers and other experimenters
    [ Hits: 306 | Votes: 0 | Rating: 0 ]
Manufacturers : Power Supply
  • Peter W. Dahl Co. - Custom transformers by Mr. Dahl has been designing specialty transformers and reactors for over 35 years, and has been a licensed Ham radio operator, K0BIT, since 1955.
    [ Hits: 578 | Votes: 1 | Rating: 10 ]
Operating Modes : Microwave Radio Equipment : HF YAGI Antennas : Cushcraft A3S
  • Chushcraft A3S - Simple Balun Support - A method for supporting a balun on a Chushcraft A3S antenna. This allows the balun to be isolated from the boom, thus reducing the effect of introduction of reaction with the balun core.
    [ Hits: 1438 | Votes: 8 | Rating: 6.5 ]
Software : Antenna analysis
  • Tower - Windows program for analyzing vertical antennas. This program shows the resistance and reactance to be expected looking into a cylindrical metallic tower over a perfect ground. It gives a useful approximation of the values to be expected in a real-world situation.
    [ Hits: 1341 | Votes: 1 | Rating: 10 ]
  • 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 ]
Software : Utilities
  • HAMIC - The Ham Intelligent Calculator - HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.
    [ Hits: 1774 | Votes: 2 | Rating: 5.5 ]
Technical Reference : Calculators
  • LCF Calculator - LCF online Calculator, calculate relation between Frequency Capacitance Inductance and Reactance
    [ Hits: 2674 | Votes: 35 | Rating: 3.86 ]
Technical Reference : Transverters
  • Microwave Transverters Projects - A collection of some electronics hobby projects by KC6QHP that includes microwave transverters for several radio frequencies such as 79 GHz, 47 GHz 24 GHz and 10 GHz. All projects includes detailed pictures of components, like voltage regulator boards, RF Decks, sequencer and protector board and receiver details.
    [ Hits: 158 | Votes: 0 | Rating: 0 ]

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