20 m vertical

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20 m vertical

130 links - and 2 categories

Antennas : 20M : 20 meter Vertical Antennas
  • A shortened 20m vertical - A shortened 20m vertical antenna design made with 4Nec2
    [ Hits: 1726 | Votes: 1 | Rating: 6 ]
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 ]
Antennas : Antenna Calculators
  • Ground Plane Antenna Calculator - This calculator is designed to give the vertical length of a quarter-wave ground plane antenna, and the length of each of the four radials for the selected frequency you have entered
    [ Hits: 901 | Votes: 61 | Rating: 5.34 ]
Antennas : Array Antennas : End-Fed : End Fed Half Wave Antenna
  • 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 ]
Antennas : Moxon
  • 20 Meter Moxon Antenna - A club project experiment about a vertical Moxon antenna for 20 meter band
    [ Hits: 1782 | Votes: 4 | Rating: 3.75 ]
Antennas : Multiband
  • 5 Band Telescopic Vertical Antenna - 5 Band 1/4 wave Telescopic Antenna. The 20m to 10m, antenna is simple and cheap to make, and has a performance that matches commercial antennas but at cost considerably lower. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car.
    [ Hits: 3601 | Votes: 3 | Rating: 9.33 ]
Antennas : Portable
  • Overview on some SOTA portable antennas - A review of some portable antennas for SOTA operations, including linked dipoles, end-fed, verticals
    [ Hits: 684 | Votes: 1 | Rating: 4 ]
  • The Stake Stick Vertical - A portable HF vertical antenna that can be used from 10 to 20 meters band
    [ Hits: 396 | Votes: 0 | Rating: 0 ]
  • Portable Vertical Antenna - A home made portable vertical antenna, that with a single 1/4 wave counterpoise wire is possible to achieve less than 1.5:1 SWR on 40, 30, and 20 meter bands. It is basically a center load, shortened ground plain vertical antenna.
    [ Hits: 362 | Votes: 0 | Rating: 0 ]
Antennas : Stealth
  • 40 m short vertical - A shortened and invisible wire antenna for 7 MHz
    [ Hits: 6189 | Votes: 17 | Rating: 7.65 ]
Antennas : Vertical
  • Balloon Vertical Omni-Antennas - Experimenting vertical wire antennas for 40 and 20 meters supported by balloons resulting in excellent gain in RX and good overall performance against horizontal dipole
    [ Hits: 771 | Votes: 1 | Rating: 5 ]
  • 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: 3017 | Votes: 5 | Rating: 5.2 ]
Radio Equipment : HF Portable Antenna : Buddipole
  • Buddipole vertical on 40m - A report on working a CQWW SSB on 40m with a vertical buddipole antenna
    [ Hits: 613 | Votes: 1 | Rating: 1 ]
Radio Equipment : HF Portable Antenna : TransWorld Antennas TW2010
  • TW Antennas Assembly - TransWorld Antennas TW2010 Traveler HF Portable Vertical Antenna setup instructions
    [ Hits: 662 | Votes: 0 | Rating: 0 ]
  • TransWorld TW2010L Review - A brief review of the TW2010L Backpacker Antenna. This is a portable vertical antenna covering 10,12,15,17 and 20m
    [ Hits: 420 | Votes: 2 | Rating: 9.5 ]
Radio Equipment : HF Vertical Antenna
  • Butternut HF9V Installation - Assembling installing and tuning the Butternut HF9V multiband vertical antenna
    [ Hits: 725 | Votes: 1 | Rating: 9 ]
Radio Equipment : HF Vertical Antenna : Maldol MFB-300
  • Maldol MFB-300 HF vertical antenna review - The Japanese-made Maldol MFB-300 HF vertical antenna offer extremely wide-band performance, with a specified frequency range of 1.0-60 MHz.
    [ Hits: 432 | Votes: 2 | Rating: 5.5 ]
Technical Reference : Coax Cables and Connectors
  • PL259 Surge Arrestor - Limiting static surges on dipoles, verticals or end fed antennas
    [ Hits: 900 | Votes: 0 | Rating: 0 ]
Technical Reference : Power Meter
  • A Simple SSB PEP Measuring Procedure - The correct procedure for measuring SSB PEP (Peak Envelope Power), using an oscilloscope with a vertical bandwidth of at least 20 MHz, or a monitor scope.
    [ Hits: 420 | Votes: 0 | Rating: 0 ]

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