3 wire

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3 wire

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Antennas : 80M
  • 80M Vertical antenna with capacitance hat - Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet
    [ Hits: 25084 | Votes: 23 | Rating: 7.05 ]
  • 80 m 3/4 wave LLV - This is a vertically polarized Phased array. The left Vertical wire is 180 degrees out of phase
    [ Hits: 4903 | Votes: 3 | Rating: 7 ]
Antennas : Dipole
  • The Monoband HF dipole antenna - If you are looking for an easy antenna for your favorite band, you can't go wrong with an halfwavelenght dipole, all you need is 3 insulators and some wire
    [ Hits: 3480 | Votes: 4 | Rating: 8.75 ]
Antennas : Helical
  • 2.4GHz Helix antenna  pop - Concise instructions on making a broadband helical antenna for 2.4GHz use, such as: 802.11b wireless networking 2.4GHz video links.
    [ Hits: 50974 | Votes: 110 | Rating: 6.13 ]
Antennas : Indoor Antennas : Installation
  • Installation of a Utility Pole - There are many ways to support an amateur radio antenna. Installatio of a utility pole will provide an antenna height of approximately 13 meters (40 feet) and will require no guy wires.
    [ Hits: 6492 | Votes: 9 | Rating: 7.56 ]
Antennas : Mobile
  • A $20 HF mobile antenna - A few hours of fun with PVC and wire and you have got yourself a respectable road radiator. The antenna consists of little more than some PVC pipe topped by a RadioShack replacement whip antenna and a couple of coils made from a small roll of #14 house wire.
    [ Hits: 10545 | Votes: 6 | Rating: 7.33 ]
Antennas : Portable
  • M1IOS - Wonder Whip antenna and tuner - M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!
    [ Hits: 14505 | Votes: 24 | Rating: 9.04 ]
  • A tri-band 2 element portable Yagi - HF Wire Yagi antenna with notes and eznec file on original article of a Portable 3-Band Yagi antenna for 10-15-20 meter band made with wire elements. Include link the original to QST article.
    [ Hits: 15048 | Votes: 4 | Rating: 7 ]
Antennas : Shortwave
  • Long Loopstick Antenna - Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.
    [ Hits: 4376 | Votes: 1 | Rating: 10 ]
  • AMANDX Dipole - The longwire antenna is a very effective antenna for the listener who wants to cover all of the shortwave bands from 530 KHZ to 30 MHZ.a
    [ Hits: 3984 | Votes: 4 | Rating: 9.75 ]
Antennas : Vertical
  • Balloon-supported verticals - Using balloons to raise lengths of wire can be great fun - as well as making it possible to work the DX on 136 kHz from small gardens.
    [ Hits: 1803 | Votes: 1 | Rating: 10 ]
Antennas : WiFi
  • DirectionalWaveguide - Seattle Wireless - Waveguide antenna is a type of DirectionalAntenna and is a modified waveguide. A waveguide is simply a tube, either rectangular or cylindrical in cross-section, that will carry a microwave radio signal with very low signal loss
    [ Hits: 4982 | Votes: 3 | Rating: 6 ]
  • PringlesCantenna - Seattle Wireless - The PringlesCantenna is an ultracheap Yagi-type directional antenna that can be built for under $10. The original Pringles Yagi was designed by Andrew Clap.
    [ Hits: 9417 | Votes: 5 | Rating: 6.8 ]
  • SardineCanAntenna - Seattle Wireless - Sardine Can Antenna. is a BiQuad or Bi circle - wire length each side (8 x 1/4 waves ) 31 mm
    [ Hits: 10235 | Votes: 13 | Rating: 4.61 ]
Antennas : Wire
  • How create simple dipoles - How to create a simple but effective half wave dipole, illustrated instrucions on how to build wire antennas
    [ Hits: 3339 | Votes: 4 | Rating: 6.5 ]
Manufacturers : Towers and Accessories
  • Rotating Tower Systems - Using our components you can build a rotating tower with greater capability than 3-4 static towers. A rotating tower allows common rotation of HF stacked arrays, VHF and UHF arrays, and antennas mounted at optimum heights. Component design also allows tower shunt loading and end support for wire antennas
    [ Hits: 1368 | Votes: 3 | Rating: 6.33 ]
Operating Modes : Radio Direction Finding
  • A low power 3.5MHz ARDF transmitter - This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.
    [ Hits: 2041 | Votes: 4 | Rating: 6.5 ]
Software : Antenna analysis
  • NEC4WIN - NEC4WIN is a 32 bits commercial antenna simulation software based on MININEC3 developed by the Naval Ocean Systems Center in the 70s and 80s. It runs under Windows and can be used to simulate, analyze and optimize wire antennas, beams, verticals, etc. NEC4WIN has limitations. They are the same as Mininec3 on which the engine is based.
    [ Hits: 1873 | Votes: 2 | Rating: 7 ]
Technical Reference : Amplifiers : HF Amplifiers
  • G3YXM 500 W PA - 40-80-160 meter band linear amplifier
    [ Hits: 3622 | Votes: 3 | Rating: 7 ]

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