antenna load

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antenna load

153 links - and 1 categories

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 ]
  • 80m Inverted-L Base-loaded for 160m - 80m Inverted-L Antenna, Base-loaded for 160m antenna. This antenna is not a good DX antenna however within small garden where true DX antennas would be impossible it has performed very well.
    [ Hits: 122 | Votes: 1 | Rating: 10 ]
Antennas : 20M : 20 meter Dipole Antennas
  • 20 meter short loaded vertical antennas - Loading is a way to lower the resonant frequency of an antenna radiator. This technique is typically used in antennas that have radiating elements that are too short for the desired resonance frequency. In this excellent article the author experiment loaded vertical dipoles for 20 meters band
    [ Hits: 231 | Votes: 1 | Rating: 9 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Make a Compatct Dipole for 7 MHz - This article demonstrate how to build and mount a 40 meter loaded dipole using basic materials. This antenna reduce the overall length of an HF dipole through the use of loading coils.
    [ Hits: 215 | Votes: 0 | Rating: 0 ]
  • 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 : Antenna Calculators
  • Coil-Shortened Vertical Antenna Calculator - You can shorten a vertical antenna by using a loading coil. This online calculator tells you how the amout of inductance your loading coil will need to have.
    [ Hits: 309 | Votes: 2 | Rating: 5.5 ]
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 : Dipole
  • 20 / 40 Meter Short Coil Loaded Dipole Antenna - Experimenting a 20 40 meter short coil loaded dipole antenna with the goal to keep the total length under 40 feet so that the dipole can be mounted on two 20 foot fiberglass pole to make a 20/40 meter rotatable dipole.
    [ Hits: 345 | Votes: 3 | Rating: 8.67 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End-Fed Half-Wave Antenna for 20m 40m 80m - How to Design and Build a Field Expedient End-Fed Half-Wave Antenna for 20m, 40m and 80m. This Shorty 80m EFHW comprises a 49:1 autotransformer (to match the very high impedance at the end of a half-wave wire), a half-wavelength wire for 40m (also a quarter-wavelength for 80m), a loading coil and a short tail wire. The coil and the short tail wire (about 6 feet) make up the other quarter wave on 80m.
    [ Hits: 139 | Votes: 1 | Rating: 4 ]
Antennas : Quad
  • 3 Element Quad for 50 MHz  new - A 14.12 dBi gain three elements cubical quad antenna for the six meters band. This Quad Antenna design page include a MMA model available to download and dimensions for each element.
    [ Hits: 41 | Votes: 1 | Rating: 3 ]
Antennas : Vertical Antennas : Yagi
  • 13 Elements Yagi for 144 MHz - A homebrew 13 elements yagi antenna for two meters band. These project includes two model of the same antenna with a 6 and 7 meter boom length. Detailed pictures and nec files are available for download
    [ Hits: 142 | Votes: 0 | Rating: 0 ]
Technical Reference : Raspberry Pi
  • Mini Satellite-Antenna Rotator Mk1 - This project is a portable device used to automatically point a directional antenna towards an orbiting satellite. It takes all the effort out of little kids holding the antenna and figuring out where to point it. It allows students to talk through Amateur Radio satellites or download weather satellite images. Note: This is a complex DIY project for the advanced kit constructor.
    [ Hits: 282 | Votes: 1 | Rating: 1 ]

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