rf radial

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rf radial

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Antennas : 160M

  • Vertical antenna for 160 meter - This high antenna require a large ground composed by 40 radials. It's not very handy expecially in windy situations but is very powerfull in pile-ups. In italian
    [ Hits: 4136 | Votes: 1 | Rating: 10 ]
  • K6MM 160m Antenna Modifications - After a storm damaged the antenna, W6AER replaced it with a pre-made capacitance hat from DX Engineering. Using hose clamps and conductive grease, he ensured durability. Experimenting with radials and a coil, he aimed for better performance and resilience.
    [ Hits: 45 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Vertical Antennas
  • High Performance 40 Meters Vertical - 40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials, made from surplus military camouflage poles
    [ Hits: 2228 | Votes: 2 | Rating: 8.5 ]
  • A very efficient half size 40 meter Vertical Antenna - A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. A custom loading coil is also included in this project to perfectly tune the antenna to the CW portion of the 40 meters band.
    [ Hits: 735 | Votes: 4 | Rating: 8.5 ]
Antennas : 6M : 6 meter J-Pole Antenna
  • Half-Size 6 meter J-antenna - How to use a little known J-antenna characteristic to reduce a conventional 14 foot antenna to 7 feet. Perfect 50 Ohm match, same gain, no radials.
    [ Hits: 62 | Votes: 0 | Rating: 0 ]
Antennas : Theory
  • The mystery of radials - Effect of radials on the efficiency of antennas.
    [ Hits: 368 | Votes: 0 | Rating: 0 ]
Antennas : Vertical
  • Antenna for deed restricted lots  pop - An effective 10-20m DX antenna for deed restricted lots. The article by K7ZB introduces a simple 10-20m DX antenna suitable for deed-restricted lots. The antenna, a 15' vertical design, facilitated contacts with over 200 countries worldwide. Its design employs a telescopic aluminum tube and radial wires for multi-band operation, requiring an external antenna tuner for optimal performance. The mounting scheme and construction details ensure effectiveness and ease of use.
    [ Hits: 56267 | Votes: 13 | Rating: 6.46 ]
  • 43 Foot Multiband Vertical Installation and Performance - Installation notes, and decision analysis for selecting and erecting a multi band vertical antenna with radials.
    [ Hits: 2970 | Votes: 7 | Rating: 8.57 ]
  • Radials on Vertical Antennas - Experimental Determination of Ground System Performance for HF Verticals
    [ Hits: 1396 | Votes: 9 | Rating: 6.67 ]
Operating Modes : Portable Operations
  • Hamstick Experimentation: A Day of Surprising Results - In his POTA activation, WK4DS experimented with radials for hamstick antennas. Despite sun and RF noise challenges, successful connections were made. Surprisingly, tuned radials proved unnecessary, simplifying setup. Hamsticks demonstrated versatility across frequencies. Increased power improved signal quality, sparking his curiosity for further exploration in radio technology.
    [ Hits: 44 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Vertical Antenna
  • Challenger DX Antenna Review by NK7Z - A review of the GAP Challenger DX Antenna that is not a traditional 1/4 wave vertical, but is a vertical dipole, this gives it several advantages over a standard 1/4 wave vertical, mainly the reduced number of radials, with excellent performances.
    [ Hits: 220 | Votes: 2 | Rating: 10 ]

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