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Query: dipole
Links: 648 | Categories: 10
Categories
- Antennas > 20M > 20 meter Dipole Antennas
- Antennas > 40M > 40 meter Dipole Antennas
- Radio Equipment > HF Portable Antenna > Buddipole
- Antennas > Dipole
- Manufacturers > Antennas > HF > Dipole Antenna
- Antennas > Fan Dipole
- Antennas > Folded Dipole
- Antennas > Resonant Feedline Dipole
- Antennas > T2FD
- Antennas > Wire
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Inverted vee dipole antenna for 20 meters band by VK1OD
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This is modified version of buddipole antenna, using vertical wires instead of telescopic ends by ks7j
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What is NVIS Near Vertical Incident Skywave. This article on NVIS (Near Vertical Incidence Skywave) explores its role in short-range HF communication, covering 0-200 miles. NVIS utilizes antennas with high radiation angles and frequencies below the ionospheric critical frequency to achieve reliable local contact. He details optimal antennas, like low dipoles, and practical tips for maximizing NVIS performance, emphasizing its advantages such as reduced noise and independent operation without repeaters. However, challenges include frequency sensitivity and the need for appropriate antenna setups at both ends for effective communication.
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Article and comparison between bazooka antennas and dipole, taking care of effieciency and bandwidth
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Full size or shortened dipoles, Single band or Multi band, Half Square Antennas, Fan Dipole Antennas, Delta Loop Antennas, Antennas completely assembled Loading coil packages, delta loops
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Broadband dipole antenna, needs an antenna tuner but can reach 3db gain over dipole
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The Cedevita-20 is a hybrid monoband antenna, the result of merging the radiator of a shortened vertical with one element of a dipole. It fits on most balconies and must be hung from the ceiling. By ik1zyw Paolo Cravero
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How to build a trapped rotary dipole with many photos ecc.
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A multiband windom dipole antenna for 80 40 20 10 meters, feeded with a home made 4:1 balun, in spanish.
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Described here is a simple omni-directional, vertically-polarized dipole for two meters. Made from coaxial cable, it can be rolled up and stored in a small container
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The W8JK is a famous and effective DX antenna, first built by John Kraus, W8JK, in 1937. A Beam antenna with two parallel dipoles driven with opposite phase, with a close spacing of an eighth of a wavelength.
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The Broadband Double-Bazooka Antenna- How Broad Is It? Adapted from Technical Correspondence, QST, September 1976, the increasing interest in using the coaxial dipole via W2DU
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French manufacturer (F5MSU) of antennas and accessories since 1999 : Yagi, Delta-loop, dipoles, T2FD, verticales, EFHW, baluns, ununs, etc.
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These omnidirectional antennas offer Horizontal polarization, and about 2.1 dbd of gain. They are much quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna.
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An excellent all-around 40 meter antenna for those who don't have room for a multi element yagi antenna
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The page provides detailed instructions on how to build a double bazooka antenna for the 40 meters band. It includes information on materials needed, measurements, and assembly steps. The antenna can be configured as an extended dipole or an inverted V, offering low noise, wide bandwidth, and a 1:1 standing wave ratio. The content also offers calculations for other bands and includes photos of the antenna fabrication process.
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A 1:4 balun suitable for folded dipole antennas
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The terminated tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.
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This article describes a simple, inexpensive, dipole antenna that will rival the performance of a ten-meter beam.
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Calculate your dipole, 3 element yagi and a simple dipole
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A log periodic dipole array (LPDA) antenna design that offer continuous low SWR in 13-30MHz range
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The K4VX linear-loaded dipole for 7 MHz, simple and practical way to make a short but efficient 40-meter dipole.
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Input the desired resonant frequency and it will calculate lenght in inches feet and meters
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NC4JB Josh explain in this article how to setup a simple and cheap indoor dipole antenna that can be used on almost all HF bands
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Pictures of the 160 meters dipole antenna at W5JGV
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A double dipole for the 20 and 15 meters band in french
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Inverted V antennas is a dipole with the center raised on a mast and the endpoints near ground. Calculate dimensions online.
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An attic indoor antenna successfully implemented by N9RET by using two runs of 2-conductor wire
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Off-center-fed dipoles (OCFs) are 1/2-wavelength wire antennas fed at neither the center nor the end, but somewhere between--off-center
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Fold, bend, and mutilate or kaking a dipole fit the space available
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Java script antenna calculators for ground planes, half wave verticals, quad antenna, 5/8th wave vertical antenna, dipole and inverted vee antennas
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K4TR Manufacture and sell simple dipoles, half square 2 wire phased vertical arrays, end fed zepp antennas, G5RV antennas. 1:1 baluns
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Shortened dipole with traps for 40 meters band in portuguese
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This program let you design and performance of 2-band trapped dipole antennas including trap design.
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A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.
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A Center-Fed Half-Wave Dipole is probably the simplest of antennas to construct and use. It is usually suspended between two supports, from it's end insulators, and has the feedline hanging from the center.
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It is more or less omni-directional, and horizontally polarized, it's just a dipole folded around on itself, and supported at the far (open) end with a plastic insulator.
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What iss the difference between a dipole and a vertical? Maybe not as much as you think. Come along and try another point of view.
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Dipole, broardband antennas s/s, portables, manufacturer based in Perth, Australia.
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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
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The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.
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A rotatable hanging loop antenna that has been specifically designed for hanging in a tree. Horizontally polarized with a broad azimuth pattern and gain of nearly 3dB over a simple horizontal dipole!
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Mesh constructed with enamelled wire 0.5 mm diameter For installing a support (plastic rope 2 mm) is needed. Antenna used on Solomon Isl in 1995 H44/DJ9RB
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There is a simple, homemade antenna that can pull-in your favorite station.
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Full Wave Delta Loops for 15, 20 and 30m with perimiter dipole, quiet, low TOA, mono-band - a perfect stealth omnidirectional solution
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The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.
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Here is the parts list and dim. sheet for a 6m Square Copper Dipole, made from copper water pipe