electric design

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electric design

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Antennas : 20M : 20 meter Vertical Antennas

  • 4m Tall Vertical Dipole for 20m - Constructed in May 2008, this innovative 4m tall electrically full-size halfwave vertical dipole, tunable to multiple bands, offers HF coverage despite its space-saving design. Inspired by cost-effective DIY alternatives, the antenna design departs from conventional center-fed approaches, utilizing asymmetrical dimensions. Despite resonance challenges, the antenna's performance remains viable, boasting broad bandwidth and adaptability, as demonstrated through SWR measurements and EZNEC predictions.
    [ Hits: 65 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Linear Loaded 40m Dipole - Dipole for 40m band. It is a simple linear loaded dipole feeded with 450-Ohm openwire feedline. Designed it for resonance at 7.050 MHz, can be tuned on 30m and 80m bands with an external antenna tuner. Build with simple electrical copper wire (2.5 mmq/13 awg) and two fishing poles with size of about 7 m/23 ft.
    [ Hits: 159 | Votes: 0 | Rating: 0 ]
Antennas : HexBeam
  • History of the Hexbeam Antennas - The original HEXBEAM was developed by Mike Traffic, N1HXA, in the early nineties. It is true that an M over W configured yagi antenna that resembled a butterfly was earlier tried successfully. But the advanced electrical design, the characteristic nesting concept and central terminal post that enable the multi band functionality along with the basic hardware design were all developed by Mike Traffie.
    [ Hits: 129 | Votes: 2 | Rating: 7.5 ]
Antennas : Homebrewing Techniques
  • Yagi Element Mounting Considerations - One of the most important considerations when designing and building a Yagi antenna is the method used to attach the elements to a boom. This is true because the boom influences the electrical length of the elements. In this article JH Reisert explain with drawings techniques on mounting yagi antenna elements to a boom
    [ Hits: 4305 | Votes: 2 | Rating: 8.5 ]
Antennas : Log Periodic
  • K8CU Log Periodic Antenna - Plans, photos, electrical and mechanical design for this HF Log periodic antenna.
    [ Hits: 10558 | Votes: 9 | Rating: 7 ]
  • Practical HF Log Periodic Antennas - This QST article describes the electrical and mechanical design process for two LPs that cover the HF bands from 10-30 MHz
    [ Hits: 910 | Votes: 1 | Rating: 5 ]
Antennas : Magnetic Loop
  • Build the K1FM-Loop - The latest version of the K1FM-Loop is electrically similar to the previous one, but it is designed around off-the-shelf parts or, more generically, items you can readily order online. This antenna relies heavily on 3D printing.
    [ Hits: 100 | Votes: 0 | Rating: 0 ]
Manufacturers : Cable and Connectors
  • Allied Wire and Cable - Allied Wire and Cable is a distributor and manufacturer of electronic and electrical wire and cable, tubing and cable assemblies. We also specialize in custom cable design, flexible cable, and many types of cable and wire requirements.
    [ Hits: 1327 | Votes: 4 | Rating: 6.5 ]
  • Amphenol - One of the largest manufacturers of interconnect products in the world. The Company designs, manufactures and markets electrical, electronic and fiber optic connectors, coaxial and flat-ribbon cable, and interconnect systems.
    [ Hits: 390 | Votes: 1 | Rating: 1 ]
Software : Circuit Design
  • Elsie - Filter Design - Filter design software. Elsie is an uncommon commercial-grade lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer or technician involved in that line of work.
    [ Hits: 2952 | Votes: 7 | Rating: 8.71 ]
  • SVC Filter - Filter design software. A program designed to expedite the design and analysis of lowpass (and highpass) filters with nearest 5% component values. SVCfilter is 32-bit Windows electrical filter design software nicely written to help the radio amateur, technician or engineer design and analyze lumped-element lowpass and highpass filters.
    [ Hits: 1192 | Votes: 1 | Rating: 10 ]
  • PCB gEDA - PCB is an interactive printed circuit board editor for Unix, Linux, Windows, and Mac systems. This Software runs across multiple platforms such as Unix, Linux, Windows as well as Mac systems. This Tool is widely used for electronics as well as electrical circuit designing that comes with schematic capture. PCB offers high end features such as an autorouter and trace optimizer which can tremendously reduce layout time.
    [ Hits: 103 | Votes: 0 | Rating: 0 ]
Software : Macintosh
  • RF Toolbox - A MacOSX antenna design and electronics/electrical tool package. It is a multipourpose application that allow antenna design and comomn calculations
    [ Hits: 669 | Votes: 1 | Rating: 1 ]
Technical Reference : Calculators
  • Capacitance Calculator - An online calculator for designing and evaluating capacitors based on the capacitor's area, separation, number, and dielectric constant
    [ Hits: 254 | Votes: 0 | Rating: 0 ]
Technical Reference : Duplexers

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