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Antennas : Antenna Calculators
  • Folded Dipole Calculator - A simple online folded dipole antenna calculator
    [ Hits: 1941 | Votes: 20 | Rating: 5.6 ]
  • 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: 941 | Votes: 11 | Rating: 6 ]
  • Wire Antenna Calculator - A javascript online calculator for popular wire antennas, from the standard easy to build flat-top dipole, to the inverted V dipole, but also the Quad Loop, and the equilateral delta loop antenna
    [ Hits: 1387 | Votes: 14 | Rating: 7.75 ]
  • 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 ]
  • 7 Element Yagi Calculator - Online javascript antenna calculator designed to give the critical information of a particular beam antenna, in this case a seven element Yagi, for the frequency chosen.
    [ Hits: 3440 | Votes: 57 | Rating: 6.72 ]
  • J-Pole Antenna Plan and Calculator  updated - An online J-Pole antenna calculator that need just to input the frequency and calculates in inch size of each element
    [ Hits: 968 | Votes: 25 | Rating: 4.69 ]
  • Calculate Antenna Lenght in feet, inches and meters - Inches and meters Javascript Wavelength Calculator allow to input a frequency in MHz and calculate wavelenght in several units considering also fractions of wavelenght and the velocity factor. Includes an usefull inch to meter converter
    [ Hits: 502 | Votes: 3 | Rating: 4.67 ]
  • The Antenna Torque Calculator - This unique online tool helps Ham Radio operators to choose the right rotator for medium and large HF antenna systems. The algorithm implemented in this calculator is the result of 40 years of experience in the HF Antenna sector. Given the Wind Speed, the total antenna square area, and the boom length, it will return the calculated torque value.
    [ Hits: 178 | Votes: 1 | Rating: 1 ]
  • 3 element Yagi Antenna On-line Caluclator  updated - This article includes an online calculator for a 3 element Yagi Antenna. The formula and basics theory of Yagi Antenna are also explained with examples.
    [ Hits: 834 | Votes: 19 | Rating: 4.59 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End Fed Half Wave Antenna Coupler - A home made end-fed half-wave antenna coupler with antenna lenght calculator and counterpoise calculator based on center frequency. Includes pictures and drawings along to antenna homebrewing instructions with a home made on air wound transformer
    [ Hits: 282 | Votes: 0 | Rating: 0 ]
Antennas : Feed Lines Antennas : WiFi Software : Circuit Design
  • Coil Inductance and Q Calculator - Calculates inductance and Q for single-layer coils made of solid or Litz wire. Uses U.S. or metric dimensions. Can automatically maximize Q. Includes accuracy data. Runs in Windows.
    [ Hits: 255 | Votes: 0 | Rating: 0 ]
  • Resistor Color Code Calculator - Calculate the value of an unknown resistor with this free program for windows
    [ Hits: 760 | Votes: 19 | Rating: 5.25 ]
Technical Reference : Calculators Technical Reference : Coax Cables and Connectors
  • Coax Loss Calculator Online by K5VR - RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.
    [ Hits: 249 | Votes: 2 | Rating: 5 ]
  • Coax Cable Attenuation and Power Handling Online Calculator - An on-line coaxial cable attenuation and total power handling calculator, with a lot of cable properties already configured to give the Nominal Attenuation, Maximum Cable Assembly Insertion Loss, Average Power, Cable Vg anf Nominal Td
    [ Hits: 227 | Votes: 2 | Rating: 2 ]

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