half wave vertical 20m a

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half wave vertical 20m a

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Antennas : 20M

  • 20m End Fed Antenna - 20m end fed half wave vertical antenna
    [ Hits: 3290 | Votes: 8 | Rating: 6.38 ]
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 : End-Fed
  • Delta Loop vs End Fed Half Wave on 20m - Intrigued by a German OM positive experience with a 20m delta loop, the author replicated the design, noting its favorable 50-ohm impedance compared to their 40m version. Testing against a vertical EFHW, the delta loop excelled within EU but lagged at longer distances. Despite needing more testing, the user leaned towards the EFHW for its overall performance and practicality.
    [ Hits: 123 | Votes: 0 | Rating: 0 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • 20m vertical end fed half wave - An EFHW antenna by M5FRA G8FRA
    [ Hits: 689 | Votes: 1 | Rating: 1 ]
  • 20m Half-Wave End Fed  updated - A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
    [ Hits: 1841 | Votes: 7 | Rating: 8 ]
  • Comparing Mobile whip versus EF HW Vertical - PH0NO conducted field tests comparing a mobile antenna (DX-UHV) to an end-fed half-wave wire. Results on 20m showed the end-fed wire outperforming the mobile antenna, with a significant difference in signal strength. On 40m, the end-fed wire surpassed the mobile antenna in spots and reach. While the mobile antenna is more practical, the end-fed wire offers superior performance. Further testing is planned.
    [ Hits: 81 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole
  • J-Pole for 14MHz - 20 meter wire j-pole for 14.2 MHz, a vertical, end-fed half wave antenna by N1LO
    [ Hits: 5227 | Votes: 3 | Rating: 5.67 ]
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