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Query: dipole antenna
Links: 542 | Categories: 7
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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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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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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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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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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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The ultimate satellite Omni Antenna by Howard Sodja, W6SHP. The Lindenblad antenna consists of four half wave folded dipoles slanted 30 degrees to the horizon, oriented 90 degrees to each other in azimuth, spaced 0.3 wavelength apart
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A slightly different 6M antenna project by N1GY, an Off center fed antenna for the 50 MHz.
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This article documents an unobtrusive antenna for operation on 7MHz, primarily for contacts with stations at up to 1000Km range.
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Why Multi-band Dipoles Need HEAVY Open Wire Line by Tom, K1JJ
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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
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The Emtech ZM-2 Antenna Tuner is a nifty little portable transmatch for QRP (low power). It utilizes the well-known Z-match circuit, which is especially useful for balanced antennas (like dipoles and loops).
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The 20 thru 10 meter dipole is constructed from stranded insulated wire available in most hardware stores. The feedpoint uses an 8 inch long section of 2 inch diameter PVC pipe. A section of wire joins the elements at either side of the feedpoint to avoid the inductance of square knots used on lower frequencies.
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How to create a simple but effective half wave dipole, illustrated instrucions on how to build wire antennas
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The document provides information on the Maria Maluca Antenna by dl8ncr, a small beam antenna fed with VHF ribbon line consisting of a dipole and a director adjusted for the desired band. It offers details on the construction and usage of this HF multi-band directional antenna.
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A portable dualband dipole robust and compact antenna usable for horizontal and vertical polarisation by ON6MU
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Video construction of a multiband HF trapped dipole antenna based on a variation of the classic W3DZZ design
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Overview, summary, tutorial about the dipole antenna or dipole aerial that is widely used on its own and as the basis for other antenna designs.
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The Double Bazooka Dipole is a half wave dipole with an attempt at compensation of the reactance change that occurs around resonance for a half wave dipole.
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Testing and comparison of traps and trap antennas
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A 40 ft vertical dipole antenna that can cover HF Bands from 80 to 10 meters winding a dipole in a 12m HD telescoping fiberglass pole
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An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band by K5GP
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A 144 MHz dipole antenna made from coax, PVC pipe, and aluminum foil tape
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Simple DIY stealth apartment antenna for 20m and 40m. It is basically a ZigZag quarter wave dipole antenna
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An homebrewed dipole antenna for 14MHz
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A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive
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How to build a multi-band dipole antenna with a single coax feed. Instructions for a 160M antenna that will fit in the space that a 75M dipole will with almost as good of results as a full size 160M dipole.
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The idea of using a low mount dipole, enhanced with reflector wires directly beneath the dipole, on the ground, appears to be a very good approach to creating an NVI specific antenna for local HF operation.
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This doubet antenna is a half wave dipole antenna easy to build, in french
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Design your owm HF shiortened dipole. Includes a diagram of a lumped-constant loaded dipole antenna that is intended to fit in available space, rather than requiring a full 1/2 wavelength, at a specified frequency
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German article on the multiband dipole by DG0KW. This antenna can be configured for several bands and can work in 3 or 4 bands mode. Can be used in restricted space lots.