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2.1. Antenna length based on the following formulars: 1/2 λ dipole (feet)= 468 / frequency in Mhz. 1/2 λ dipole (meters) = 142.65 / frequency in Mhz. Full wave loop (feet) = 1005 / frequency in Mhz. Full wave loop (meters) = 306.32 / frequency in Mhz. Cut wire slightly longer for connecting insulators and pruning. 22-Jun-2007 09:30 AM.
Antena „Long Wire” (LW) jest rzeczywiście najprostszą anteną wielopasmową o niekrytycznych wymiarach. Aby używać jej z powodzeniem trzeba jednak zadbać o uziemienie i dopasowanie. Budowa anteny LW. „Long Wire” (LW) to antena utworzona przez pojedynczy przewód zawieszony w wolnej przestrzeni, dołączony
Four variation of a random wire antenna with a length of 18.7 mtr. The graph in Figure 7 has been produced with data generated from 4NEC2 antenna modelling software for an antenna wire of 18.7mtr total length installed at an angle of 30 degrees over a selection of ground types.
Table shows typical SWR relative to installed wire length. SWR will vary based on topography, proximity of nearby structures, configuration of the antenna wire and choice of ground or counterpoise. For best results, use the longest wire shown on the table that will fit your installation constraints. Installing the antenna wire as an Inverted L ...
This calculator is an aid for determining antenna element lengths, based on Frequency, Type (Wire or Tubing), and Diameter (AWG#, inches, mm) of the element. At the top of the calculator, enter the Frequency (1 to 30 MHz) of interest.
The antenna wire is 90' "L"-shaped length of wire. 30' vertical and 60' horizontal is optimum. But almost any other combination will work. Do your best at keeping the vertical portion near 30'.
A long wire antenna is a type of antenna in which the length of the wire is usually greater than the length of the half-wave dipole i.e., λ/2. These are also known as harmonic antennas. It offers operating frequency range between 500 kHz to 30 MHz.
