Search Results for "length"
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Antennas Crossed Field Antenna
 The Crossed Field Antenna (CFA) is one of the applications of Correction of Maxwell's Equations which was used over 150 years ago which was proved these days that the Magnetic Field Source is only the Displacement Current not the Conduction Current .
These Corrections was made by an Egyptian Doctor Engineer Fathi Kabbary , who reached the New Correct Theory which shows that the height and efficiency of the antenna doesn't depend on the wavelength
[ Hits: 2090  Votes: 4  Rating: 1.00 ]
 LinearLoaded Inverted V
 How do you fit a full length 160 meter antenna into a 40 foot deep yard?
[ Hits: 21362  Votes: 7  Rating: 4.72 ]
 Double Extended Zepp Antenna
 This double extended Zepp provides 3 db gain over a dipole on the band it is designed for. Each side or leg is about 5/8 wavelength long.
[ Hits: 24541  Votes: 25  Rating: 6.08 ]
 7 Elements YAGI for 144 Mhz
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 The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz
SSB/MGM band, in PDF Format
[ Hits: 38508  Votes: 33  Rating: 5.83 ]
 QM5 Yagi for 2 meters band
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 The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for SporadicE and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements
[ Hits: 6215  Votes: 4  Rating: 5.25 ]
 BV6 50 Mhz Yagis
 Two Yagis for six meters band, one 1 wavelength long with a gain of 9.5dBd, and the other a 2.1wl model with a gain of 11.8 dBd.
[ Hits: 4551  Votes: 6  Rating: 7.50 ]
 50MHzYagis by DK7ZB
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 50MHzYagis with a new match, all lengths from 0.612m
[ Hits: 5672  Votes: 78  Rating: 8.37 ]
 Amateur Vertical Antenna Calculator
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 This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen.
[ Hits: 41916  Votes: 167  Rating: 5.43 ]
 The G5RV Antenna System ReVisited
 The original G5RV antenna system consists of a centerfed horizontal 102' wire plus a 34' length of openwire 525Ohm feeder. Louis Varney, the antenna system's developer, intended two other features. Learn more at Cebik website
[ Hits: 4241  Votes: 0  Rating: 0.00 ]
 Moxon Rectangle Calculator
 Program to calculate the dimentions of a Moxon Rectangle.
All equations correlated to NEC antenna modeling software for wire diameters from 1e5 to 1e2 wavelengths.
[ Hits: 5218  Votes: 19  Rating: 5.72 ]
 A Portable MultiBand Magnetic Loop Antenna
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 Described here is a simple multiband magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible
[ Hits: 31488  Votes: 9  Rating: 6.11 ]
 Cubical Quad Antenna Design
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 By N6VNG, can be used to determine the element lengths and the gamma match values for different frequencies, includes link to excel files with formulas to dimension your quad antenna.
[ Hits: 29292  Votes: 80  Rating: 5.80 ]
 How to build a tuned loop antenna
 How can you vastly improve your Medium Wave reception? its quite simple really, all you need is 120 foot of wire, a few lengths of timber and an old tuning capacitor with which you can build the answer to every DX'ers prayers, a tuned loop antenna.
[ Hits: 21192  Votes: 12  Rating: 7.92 ]
 Interference Cancelling System
 The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
[ Hits: 1664  Votes: 1  Rating: 3.00 ]
 Random length wire antennas
 Random Length Wire Antennas by WØIPL
[ Hits: 589  Votes: 2  Rating: 5.50 ]
 LF/VLF Portable Loop Antenna
 The octoloop antenna is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe
[ Hits: 3412  Votes: 11  Rating: 5.08 ]
 Dominion Radio Astrophysical Observatory
 operates the sevenantenna Synthesis Telescope (ST), the 26meter Telescope, and the 10cm Solar Flux Monitor. It is a member of the Canadian Galactic Plane Survey , a project to map 60 degrees of the Galactic plane at numerous wavelengths with a uniform sensitivity.
[ Hits: 411  Votes: 1  Rating: 1.00 ]
 Shortwave Propagation
 Description of shortwave propagation on shortwaves, refers to those wavelengths which occur with frequencies from about 3 to 30 mHz, or 100 to 10 meters
[ Hits: 1262  Votes: 2  Rating: 8.00 ]
 Wavelength USA
 Hamsticks, mobile and base antennas
[ Hits: 1199  Votes: 2  Rating: 6.50 ]
 Coaxial Cable & Power Handling
 This calculator can be used to estimate the attenuation (dB loss), power handling capability, and transmission efficiency for some of the more popular Wireless Communications and MIL Spec cables at the frequency of interest
[ Hits: 968  Votes: 8  Rating: 8.17 ]
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