40m antennas

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40m antennas

34 links - and 1 categories

Antennas : 40M
  • A comparison of 40 meter beam antennas - This page describes a comparison study on seven different beam antennas for 40 meters band. Yagi antennas, moxon antennas, mini horse all antennas are described with schema diagram , azimuth plot and SWR F/B Gain diagram
    [ Hits: 266 | Votes: 0 | Rating: 0 ]
  • 40m Wire Antennas Comparison - On the field comparison among C-Pole antenna, an EFHW vertical antenna and an Inverter V dipole antenna. Test is done using two identical WSPRLite beacons that transmit with 200mW on the WSPR frequency and analyzing spotted results.
    [ Hits: 170 | Votes: 1 | Rating: 3 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Linear Loaded 40m Dipole - Dipole for 40m band. It is a simple linear loaded dipole feeded with 450-Ohm openwire feedline. Designed it for resonance at 7.050 MHz, can be tuned on 30m and 80m bands with an external antenna tuner. Build with simple electrical copper wire (2.5 mmq/13 awg) and two fishing poles with size of about 7 m/23 ft.
    [ Hits: 159 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Magnetic Loop Antennas
  • 40m Small Loop Antenna - A well documented article on a small magnetic loop antenna for the 40 meters band
    [ Hits: 2433 | Votes: 7 | Rating: 5.14 ]
Antennas : 40M : 40 meter Vertical Antennas
  • 40m Vertical End-Fed Antenna - A quarter wave vertical end-fed antenna for the 40 meters band. As all vertical antennas, also this aerial requires a good earthing system. In this project the ground is composed by twelve 4, wires buried in the lawn by using a spade to create a slit to drop the wire into.
    [ Hits: 2688 | Votes: 7 | Rating: 5.43 ]
  • Vertical bazooka antenna for the 40m  new - A quarter wave vertical omni-directional antenna for 7 MHz. Formulas for dimensions in feet and meters are provided. Ideal radial angle is between 35° and 45°. Velocity factor (Vf) varies based on coax type.
    [ Hits: 129 | Votes: 7 | Rating: 6.85 ]
Antennas : Array Antennas : Dipole
  • 80m-40m Loaded Dipole - A dual band dipole antenna for 40 and 80 meters band. Total lenght of 26 meters, foreseen two coils at aprox 11 meters distance from center feed.
    [ Hits: 244 | Votes: 4 | Rating: 5 ]
Antennas : End-Fed
  • Multiband portable wire antennas - Vertical end fed antenna used for portable operations. The antenna will work on 80 with acceptable results, it will work fine on 40m, and it will be a good deal better than a normal 1/4 wave GP on 20, 17, 15 meters.
    [ Hits: 186 | Votes: 0 | Rating: 0 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • Speaker Wire EFHW Antennas 20m/ 40m - Author experiments end fed half wave antennas using common two conductore speaker wire, this article features a couple of end-fed halfwave wires for the 40M and 20M bands.
    [ Hits: 259 | Votes: 1 | Rating: 9 ]
  • Full size 80m End Fed Half Wave Antenna - The author reflects on expanding their antenna for 80m coverage during lockdown. They extend the End Fed Half Wave (EFHW) using a Spiderbeam pole and "cheating" by dog-legging across their garden. Despite challenges, they achieve coverage for multiple bands with minimal cost. Practical Wireless features EFHW antennas, including a pre-made 20m EFHW extended for 40m.
    [ Hits: 70 | Votes: 0 | Rating: 0 ]
Antennas : Indoor
  • Ferrite Rod TX Antenna for 40m - No exotic claims are made for this antenna. Author just tried a few WSPR experiments on 40 meters and was surprised with the results. What appears below may inspire you to try something equally off-the-wall, to see what happens.
    [ Hits: 298 | Votes: 1 | Rating: 1 ]
Antennas : NVIS
  • Portable NVIS Loop for 80m to 40m - A portable (15.5 foot diameter) NVIS loop for 3.5 to 7.3 MHz. Performs well at high and low takeoff angles, and has smaller footprint than most NVIS antennas.
    [ Hits: 363 | Votes: 0 | Rating: 0 ]
Antennas : Vertical
  • 80m-40m Dual-Band Vertical - A dual band 40-80 vertical antenna on an 18m Spiderbeam Fiberglass Spiderpole, with monoband performance
    [ Hits: 159 | Votes: 2 | Rating: 10 ]

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