tunable antenna

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tunable antenna

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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 : G5RV
  • I0SJC G5RV antenna - A plan to homebrew a G5RV antenna, tunable on 10-15-20-40-80 meters band
    [ Hits: 1765 | Votes: 3 | Rating: 6 ]
Antennas : Loop
  • Small Loop Antenna for the 80m to 10m - This article describes the development of two tunable antennas each consisting of three interconnected small loops and capable of providing excellent DX performance. The aerials are home-constructed, and located in a very small garden with a minimum of visual impact on the neighbours and are low enough in height to avoid the attention of UK planning authorities.
    [ Hits: 395 | Votes: 1 | Rating: 8 ]
Antennas : Magnetic Loop
  • The Midnight Loop  updated - An Experimental, High-efficiency, Graphic-Tunable Magnetic Loop antenna and loop controller in a 52 pages PDF presentation with drawings and pictures
    [ Hits: 1173 | Votes: 2 | Rating: 8.5 ]
  • Magnetic Loop HF antenna - An homebrew HF Magnetic loop made with 2m length of 6mm diameter copper pipe formed into a near circle as the low loss inductor, a short length of coax as a capacitor,a short length of mains cable, again as a fixed tuned capacitor, a tunable 365pF air spaced capacitor, and a small Jackson C804 airspaced variable with a small 3-35pF trimmer in parallel
    [ Hits: 130 | Votes: 0 | Rating: 0 ]
Antennas : Maria Maluca
  • Maria Maluca for 6 to 20 meters - A two elements beam antenna tunable from 6 to 20 meters, based on the Maria Maluca antenna project by DB9EX, in german
    [ Hits: 2574 | Votes: 1 | Rating: 10 ]
  • Antenne Maria Maluca - An antenna originally planned in the sixties, a two element beam antenna tunable on several band, in french
    [ Hits: 1882 | Votes: 2 | Rating: 4.5 ]
Antennas : Multiband
  • Vipormutant antenna by ON6MU - A Versatile Innovative Portable Multi-band Tunable Antenna can work HF VHF and UHF ideal as portable or balcony antenna
    [ Hits: 3421 | Votes: 6 | Rating: 5.67 ]
Antennas : Portable
  • Portable Loop Antenna  pop - This loop it is small and light enough to carry while operating, it disassembles into small but rugged pieces that fit easily in a backpack or gym bag, and it can be tuned from 14 MHz to 30 MHz. This tunable magnetic loop antenna is my contribution to the well established art of amateur loop making. Can be tuned from 14 MHz to 30 MHz.
    [ Hits: 51473 | Votes: 24 | Rating: 6.04 ]

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