wire length

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wire length

47 links

Antennas : 20M
  • Speaker Wire Delta Loop Antenna for 20M - The antenna I built was inspired by a portable delta loop designed by Doug DeMaw, W1FB. Given that I constrained myself to a 50-foot roll of speak wire, I scaled my antenna for the 20M band. Using the formula, 1005 divided by the frequency in megahertz, I calculated a total length of 71 feet (21.6 meters) for the center of the 20M band.
    [ Hits: 126 | Votes: 0 | Rating: 0 ]
Antennas : Antenna Calculators Antennas : Dipole
  • How to Tune Dipole Antennas - This is a standard calculation method that can help you while tuning dipole antennas, by adjusting wire lengths. This method can be used also when you need to add lenght to your wires, and can be additionally used to quarter waves vertical antennas
    [ Hits: 335 | Votes: 5 | Rating: 8.6 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End-Fed Half-Wave Antenna for 20m 40m 80m - How to Design and Build a Field Expedient End-Fed Half-Wave Antenna for 20m, 40m and 80m. This Shorty 80m EFHW comprises a 49:1 autotransformer (to match the very high impedance at the end of a half-wave wire), a half-wavelength wire for 40m (also a quarter-wavelength for 80m), a loading coil and a short tail wire. The coil and the short tail wire (about 6 feet) make up the other quarter wave on 80m.
    [ Hits: 139 | Votes: 1 | Rating: 4 ]
Antennas : Stealth
  • Balcony Dipole Antenna for 20 Meter - Antenna may be made practically from any wire (strand, solid) having a reasonable diameter 0.5 2.0 mm (24- 12 AWG). Antenna may be installed at any balcony of 3 to 6 meter length.
    [ Hits: 338 | Votes: 3 | Rating: 10 ]
Antennas : Tuners
  • QRP Z Match Antenna Tuner Project - A Home made antenna tuner for QRP transceivers. This small tuner is the ideal for portable operations with random length wires or whenever you have not a resonant antenna.
    [ Hits: 107 | Votes: 1 | Rating: 10 ]
Antennas : Wire
  • Random Wire Antenna Lengths - When on the trail, at Field Day, or whenever a good antenna is unavailable, a random wire can save the day, but it is important to understand its properties.
    [ Hits: 186 | Votes: 1 | Rating: 2 ]

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