lf antenna

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lf antenna

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Antennas : 160M
  • Experiments with 160m antennas - Experimentin wire antennas on top band using several type of aerials. This includes a 40 to 160 meters EndFed Half Wave kite antennas and 160m/80m loaded vertical antenna.
    [ Hits: 177 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Half-Length Dipoles for 40 Meters - Complete collection of the four main parts of this excellet research on modelling and designing half wave dipole antennas for 40 meters band, covering all aspects beginning from full wave length antennas, to shortened, loaded and reshaped dipoles
    [ Hits: 377 | Votes: 2 | Rating: 10 ]
Antennas : 6M
  • End-fed 6-meter Zepp - A half-wave antenna can be end-fed or center-fed. An end-fed half-wave antenna may offer mechanical and construction advantages over a center-fed antenna. The radiation pattern for an end-fed half-wave antenna is no different than a center-fed half-wave antenna.
    [ Hits: 174 | Votes: 2 | Rating: 9 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 6el LFA Yagi for 50MHz - This six element LFA Yagi for six meters has a 1.5 inch square boom with a 1.5 inch secondary boom beneath the first. This ensures the 7.3 metre long boom will not sag and will not require any guying. This antenna has 12.3 dBi Gain and just over 23dB F/B.
    [ Hits: 116 | Votes: 2 | Rating: 4 ]
Antennas : 70cm
  • J-Pole antenna for UHF Bands - This is a simple half wave antenna for 70 cm band, made using the jpole design.
    [ Hits: 192 | Votes: 1 | Rating: 10 ]
Antennas : 80M
  • 80m Shortened Dipole Antenna - This antenna just requires about 24m of free space instead of 41m that a normal half wave 80m antenna needs to hang up. The so called loaded dipole uses a coil in every dipole arm to electrically lengthen the mechanical too short dipole arms. Every coil has an inductivity of 120 microHenry.
    [ Hits: 152 | Votes: 0 | Rating: 0 ]
  • An 80 m dipole antenna for restricted spaces - You can bend the wires in a half-wave dipole so that it takes up less space, with minimal loss of efficiency.It is advisable to get the ends of the antenna as high as possible, especially if children and animals are kept in the area around the antenna, as there are very high tensions on the ends of the antenna during transmission! In Norwegian
    [ Hits: 184 | Votes: 0 | Rating: 0 ]
Antennas : Active
  • E-field Probe Antenna - A small active voltage probe antenna to aid reception on the LF bands
    [ Hits: 142 | Votes: 0 | Rating: 0 ]
Antennas : Coils
  • Loading of Short Antennas - An interesting article on loading short vertical monopole antennas, representing six different methods. Base loading, Center Loading, Top Loading, Continuous loading, half and half loading and capacitive top loading.
    [ Hits: 678 | Votes: 4 | Rating: 6.25 ]
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 ]
  • Trapped five band EFHW SOTA antenna - A trapped multi band end-fed-half-wave antenna for 40/30/20/17/15m.
    [ Hits: 424 | Votes: 1 | Rating: 10 ]
  • A simple NonDirectional Antenna for 10 meter - This article is about a simple vertical end-fed-half-wave wire antenna for 10 meters that can be used in case of restricted space.
    [ Hits: 695 | Votes: 2 | Rating: 7 ]
Antennas : J-Pole
  • Improving Gain of the Super J-Pole Antenna - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. Get 0.8 dB more gain out of the trusty Super-J by replacing the traditional phasing stub with a long coil.
    [ Hits: 189 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • 2m Lightweight Portable Dipole - Lightweight portable QRP 2m & 70cm half wave dipole for SOTA or an emergency antenna for the 2m and 70cm Go-box.
    [ Hits: 174 | Votes: 1 | Rating: 9 ]
  • Portable VHF UHF Dipole Antenna - A SOTA Lightweight Portable 2m 70cm Dipole Antenna Lightweight portable QRP 2m and 70cm half wave dipole for SOTA or an emergency antenna for the 2m and 70cm Go-box.
    [ Hits: 174 | Votes: 0 | Rating: 0 ]
Antennas : Receiving
  • 160 Meters 4 Square Receive Antenna - A four square array receiving antena for the top band, performance is extremely directional and space requirements are really hard to fulfill.
    [ Hits: 178 | Votes: 1 | Rating: 10 ]
Antennas : VHF UHF
  • Dual Band Quarter Wave Droopy Antenna - Adapted from a similar project by NA4IT. Made with one quarter wave 2 meter radiating element pointing upward and it is surrounded by four 70 cm elements.
    [ Hits: 342 | Votes: 1 | Rating: 9 ]
Antennas : W3DZZ
  • W3DZZ Multiband Antenna - An easy to build and extremely high performance antenna, works perfectly on all HF bands 3.5-28 MHz with some compromises, it is basically an half wave dipole for 40-80 meters, an LC circuit or trap 40 meters allows you to use a single radiating element.
    [ Hits: 463 | Votes: 3 | Rating: 7.67 ]
Manufacturers : Antenna Parts
  • Wolf River Coil - Vertical Base Replacement Coil. Wolf River Coil build quality antenna coils that are easy to tune and easy to install.
    [ Hits: 165 | Votes: 0 | Rating: 0 ]
Technical Reference : 3D Printed Projects
  • 3D Printed Accessories for the FT-817 and KX2 - DC plug adaptor using an XT60 connector. 18650 Lithium battery 3 cell carrier, Three band end fed half wave antenna, XT60 chassis mounted flange.
    [ Hits: 182 | Votes: 0 | Rating: 0 ]

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