This calculator can be used to design a quarter wave ground plane antenna with radials.
1 4 wave mobile antenna calculator.
7 15 for the 40 meter band.
Enter one only one value the desired frequency or the antenna length in any length field.
Of nearly all antenna designs the 1 4 wave requires the most space making it difficult to place with other antennas on a mast.
1 4 wave antenna calculator.
One might have seen long straight rod on the car it is known as whip antenna.
Ahh the good old quarter wave ground plane.
It consists of flexible wire.
I have been making a few 1 4 wave antennas lately mainly for uhf and the ghz bands with good success so i decided to create a calculator to simplify the process and maybe get some people who have not tried one before to give it a go.
It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength.
This calculator will help you to calculate the different wavelength of antennas based on the frequency.
This calculator is designed to give the vertical length height of a particular antenna for the frequency and wavelength chosen.
This calculator on the whip antenna mentions formula or equations used for calculations.
I guess you could see it as the spike on a x mass tree.
The antenna calculator for half wave dipoles.
Whip antenna calculator monopole antenna calculator.
This whip antenna calculator calculates various parameters of whip antenna or monopole antenna.
If you have no particular preference within a given ham radio band then simply enter its center frequency i e.
This calculator is designed to give the vertical length height of a particular whip type antenna or the frequency of it.
Both can be used with or without a 1 1 balum although the use of a 1 1 balum will change the feed point of the unbalanced coax to a balanced antenna load there by reducing the chance of radiation from.
There are usually four radials three being a minimum but you could use up to six.
A horizontal 1 2 wave length dipoles will have a feed point of about 73 ohms while the inverted vee antennas have a feed point of about 52 ohm s.
This does not take into consideration the type or size of horizontal reflectors of even if there is a need for them.
The distance between one point to another adjacent point in a wave is known as the wavelength.
Frequency calculations are based on radio waves traveling at the speed of light 299 792 458 meters per second.
Use our simple calculator to determine approximate dimensions of materials needed to build a vertical antenna.