20m 40m vertical

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20m 40m vertical

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Antennas : End-Fed : End Fed Half Wave Antenna

  • 20m Half-Wave End Fed - 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: 1365 | Votes: 3 | Rating: 10 ]
Antennas : Multiband
  • Homemade Carolina Windom antenna - This multiband wire antenna it is an off centre fed dipole, with 10 feet of vertical radiator, needs no tuner on 40m, 20m and 10m and works fine on all bands above 40m with a tuner, and even below 40m on 60m, and 80m.
    [ Hits: 7790 | Votes: 12 | Rating: 7.58 ]
  • Vertical antenna for Vacation - Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band. Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
    [ Hits: 4929 | Votes: 4 | Rating: 8 ]
Antennas : Vertical
  • Two Element Phased Verticals - Two 40 meter phased vertical antennas, project, pictures and description by W4NFR
    [ Hits: 997 | Votes: 2 | Rating: 6 ]
  • 20m 40m trapped squid pole antenna - An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it
    [ Hits: 2756 | Votes: 5 | Rating: 5.2 ]
Antennas : Windom
  • Homemade Carolina Windom antenna - An off centre fed dipole, with 10 feet of vertical radiator. It needs no tuner on 40m, 20m and 10m by M0UKD
    [ Hits: 1189 | Votes: 1 | Rating: 1 ]
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