80 40 antenna

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80 40 antenna

147 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 ]
Antennas : 23cm
  • Short DL6WU yagi for 23cm - 1260 MHz yagi antenna for ATV with a total Bandwidth (3 dB) 1240-1280 MHz and 10 dBd gain
    [ Hits: 137 | Votes: 1 | Rating: 4 ]
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 ]
  • 40-80 Coax Trap Dipole - Full article on how to build a home-made wire dipole antenna for 40 and 80 meters band. Article is fully in italian, as it was published on ARI RadioRivista, but is plenty of self explaining pictures that will guide you on homebrewing this trapped dipole antenna for the lower amateur radio bands.
    [ Hits: 261 | Votes: 3 | Rating: 9.33 ]
Antennas : 80M
  • Dedicated 80m Vertical - A dedicaed vertical antenna for 80 meters band based on a 40 meter vertical experiment
    [ Hits: 222 | Votes: 1 | Rating: 4 ]
Antennas : Capacitive
  • Capacitive Antenna by DL7JV - Experimenting with capacitive antennas for 40 and 80 meters band. A very space-saving antenna with good receivings caracteristics
    [ Hits: 164 | Votes: 1 | Rating: 9 ]
Antennas : Dipole
  • Quad Band Inverted V Antenna - An inverted V Dipole antenna for HF bands, working on 10 20 40 and 80 meters band. PDF Presentation
    [ Hits: 379 | Votes: 1 | Rating: 7 ]
  • 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 ]
  • 160-80-40 Metre Trapped V-Dipole - A Trapped dipole inverted V antenna for lower HF Bands. Construction details are for temporary installation. Permanent installations will require additional ruggedising and waterproofing however the basic electronics concepts remain the same. This project includes SWR plots for the three bands and pictures details of the homemade traps.
    [ Hits: 108 | Votes: 0 | Rating: 0 ]
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 : Fan Dipole
  • VE6LK Fan Dipole - Multiband dipole antenna working on 80-40-20-15m, a 3 element antenna, 15m being a 3rd harmonic of 40.
    [ Hits: 161 | Votes: 1 | Rating: 10 ]
Antennas : Loop
  • Moebius style 80/40 m band antenna - A loop antenna for 80 and 40 meters band, the main loop is based by a crossed line using aluminium strip lines. The main loop diameter is 150 cm.
    [ Hits: 315 | Votes: 1 | Rating: 1 ]
Antennas : Magnetic Loop
  • Magnetic Loop Antennas for 40-80-160m - This magnetic loop DIY site is ment to be an introduction into making DX high quality magnetic loop antennas that will beat any dipole
    [ Hits: 231 | Votes: 2 | Rating: 8.5 ]
Antennas : OCF
  • Homebrew an OCF Off-Center Fed Dipole Antenna - This type of antenna is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It’s a dipole fed off center with a 4:1 balun at the offset feed point. The antenna shown covers 80, 40, 20 and 10 meters. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. 160-10m, 80-10m or 40-10 meters depending on your available space. Other bands will require a tuner.
    [ Hits: 194 | Votes: 3 | Rating: 6.67 ]
Antennas : Theory
  • The Weird Antenna Wire End Effect - A half wave wire that is tuned for resonance on 80m will NOT be resonant on 40m despite a precise harmonic relationship between the two bands. The End Effect is caused by a capacitive coupling between an unterminated wire end and the ground.
    [ Hits: 92 | 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 ]
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 ]
Antennas : Windom
  • Build your own Windom Antenna - Building a Windom HF Antenna. A PDF file presentation about homebrewing a windom antenna for the HF bands with formulas for 40 and 80 meters bands and step by step guide on making a 4:1 balun to feed the antenna.
    [ Hits: 761 | Votes: 2 | Rating: 10 ]
Internet and Radio : WebSDR
  • WebSDR Wismar - This WebSDR is located in Wismar in the north of Germany JO53RV and operated by Frank Goehling DO7AX. There are four RTL2823U USB dongles with three Ham It UP up-converters for 80m/40m/20m and a RTL2832U for the 2m Band. The Antenna for 80/40/20m is a 84 meters Delta Loop.
    [ Hits: 379 | Votes: 4 | Rating: 10 ]
  • WebSDR in Andorra - Listen to online WebSDR located in Andorra Europe. Four receivers on 60m, 20m, 40m, and 80m, connected to a dipole antenna direction East/West
    [ Hits: 130 | Votes: 1 | Rating: 5 ]

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