antenna formulas

antenna formulas

Antennas : 40M : 40 meter Vertical Antennas

• Vertical bazooka antenna for the 40m - A quarter wave vertical omni-directional antenna for 7 MHz. Formulas for dimensions in feet and meters are provided. Ideal radial angle is between 35° and 45°. Velocity factor (Vf) varies based on coax type.
  [ Hits: 135 | Votes: 7 | Rating: 6.85 ]

• Antenne double-bazooka - A page in french dedicated to the double bazooka antenna, with a short history of this antenna model and main characteristics including a comparison versus the dipole antenna and formulas to determine elements size.
  [ Hits: 1080 | Votes: 12 | Rating: 5.58 ]

• Antenna Cable Loss and SWR - Calculate Cable Loss from SWR and reverse. Text file with only two simply formulas
  [ Hits: 2192 | Votes: 4 | Rating: 4 ]

• 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: 330 | Votes: 1 | Rating: 7 ]

• Cubical Quad Antenna Design  ^pop - 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: 30805 | Votes: 88 | Rating: 5.74 ]

• Designing Vertical Aerials - If you want to design vertical antennas you can find all theory and formulas used to model a vertical aerial calculating capacitance, reactance, building the inductor and calculating resistances. Includes an excel spreadsheet to calculate efficiency.
  [ Hits: 576 | Votes: 0 | Rating: 0 ]

• Build your own Windom Antenna - Building a Windom HF Antenna. A PDF file presentation about homebrewing a windom antenna for the HF bands with formulas for 40 and 80 meters bands and step by step guide on making a 4:1 balun to feed the antenna.
  [ Hits: 770 | Votes: 2 | Rating: 10 ]

• Ham Radio Tools - A free app that is a reference guide that includes logging. It also has short Q code reference sheet, common formulas, and an antenna calculator.
  [ Hits: 577 | Votes: 1 | Rating: 10 ]