length

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length

193 links

Antennas : 80M
  • 80M Grounded Half Loop - The grounded half loop describe in this article is basically a half wave length wire on 80 Meters
    [ Hits: 1116 | Votes: 1 | Rating: 1 ]
Antennas : Antenna Calculators
  • Patch Antenna Calculator - This online microstrip patch antenna calculator determines the length and width of a microstrip patch antenna for a given frequency
    [ Hits: 1174 | Votes: 20 | Rating: 4.86 ]
  • Microstrip Patch Antenna Calculator - Microstrip Patch Antenna Calculator determines the length and width in millimeters of a rectangular patch antenna.
    [ Hits: 1148 | Votes: 14 | Rating: 5.35 ]
  • Microstrip Patch Antenna Calculator - This calculator calculates the length and width of a patch antenna based on the frequency, dielectric constant of the dielectric and the height of the thickness of the patch antenna substrate.
    [ Hits: 478 | Votes: 2 | Rating: 1 ]
  • Amateur Dipole Antenna Calculator - This calculator is designed to give the horizontal length of a particular dipole including Tees, antenna, or one side of it, for the frequency chosen. Enter the desired frequency and select the desired calculation from the drop box
    [ Hits: 1078 | Votes: 9 | Rating: 7.45 ]
  • Ground Plane Antenna Calculator - This calculator is designed to give the vertical length of a quarter-wave ground plane antenna, and the length of each of the four radials for the selected frequency you have entered
    [ Hits: 901 | Votes: 61 | Rating: 5.34 ]
  • Full Wave Loop Antenna Calculator - Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.
    [ Hits: 929 | Votes: 5 | Rating: 8.2 ]
  • Vertical Antenna Calculator - Use this online calculator to determine the length of a quarter-wave antenna from the frequency. Both metric and English units of measurement are supported.
    [ Hits: 915 | Votes: 8 | Rating: 6.99 ]
  • Dipole Calculator - Use this online calculator to determine the length of a dipole antenna from the frequency. Both metric and English units of measurement are supported.
    [ Hits: 942 | Votes: 11 | Rating: 6 ]
  • Quick antenna length calculator - An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page
    [ Hits: 771 | Votes: 0 | Rating: 0 ]
Antennas : Baluns
  • 1:49 Transformer - This 1:49 transformer is used with wires any multiple of 1/2 wavelength. This is not a matching network, it's a wideband transformer and it has some advantages compared to LC matching
    [ Hits: 2471 | Votes: 25 | Rating: 5.84 ]
Antennas : Dipole
  • A simple 20-40 dipole - A simple to build full length 20/40 dipole antenna to be used in inverted vee configuration
    [ Hits: 992 | Votes: 3 | Rating: 5.67 ]
Antennas : Homebrewing Techniques
  • Wire Antenna Design Lengths - The Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally accepted.
    [ Hits: 327 | Votes: 1 | Rating: 7 ]
Antennas : Installation
  • Broadcast Antennas on Buildings - When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.
    [ Hits: 358 | Votes: 2 | Rating: 10 ]
Antennas : Loop
  • Vertical Full Wavelength Loop - Consider installing a stealth vertical loop antenna if you live in a place with no antenna restrictions. Full wave loop wire antennas allow you to be on the air without installing evidente external aerials.
    [ Hits: 457 | Votes: 1 | Rating: 8 ]
Antennas : Magnetic Loop
  • Simple Coax Mag Loop Antenna - A homemade Magnetic Loop antenna from a spare 3m length of RG213 working from 30m to 15m with a 130pF tuning capacitor
    [ Hits: 3995 | Votes: 11 | Rating: 7.18 ]
Antennas : Theory
  • Quarter Waves and Velocity Factor - Coax Velocity Factor in Baluns, Does it Matter? Test results show coaxial cable velocity factor does not always enter into stub length calculations especially in the world of Baluns
    [ Hits: 208 | Votes: 0 | Rating: 0 ]
Antennas : Yagi
  • W8JK Beam Antenna - 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.
    [ Hits: 5142 | Votes: 21 | Rating: 7.19 ]
Technical Reference : Audio
  • Audio Cables - Article with answers to common questions as what cable types to user, cable length, how to join ends.
    [ Hits: 268 | Votes: 0 | Rating: 0 ]
Technical Reference : Coax Cables and Connectors : Testing Coax Cables
  • Measure Impedence of Coax Cables - This video shows one way to use a scope and function generator to measure the length of a piece of coax transmission line as well as estimate its impedance
    [ Hits: 1091 | Votes: 3 | Rating: 6.67 ]

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