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Example Calculations. A quarter wave (λ/4) antenna designed for 20 meter applications (15 MHz) has a length of 3.3 meters. The length of radials, assuming a 10% increase, is 3.6 meters. This assumes a velocity factor of 0.66.
This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. There are usually four radials, three being a minimum, but you could use up to six.
3 dni temu · To calculate the length of an antenna, you may use the formula: L = 468 / f. l = L /2. where: L — Length of the dipole antenna; l — Length of each arm of the dipole; and; f — Frequency. Dividing 468 by the antenna frequency will give you the length of the antenna in feet.
This calculator calculates the reactive near field distance, radiating near field distance (Fresnel region) and the far field distance. Just enter the frequency of operation and the dimension of the antenna.
11 cze 2017 · 1/4 Wave Antenna Calculator. 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.
This antenna range calculator calculates range of an antenna based on antenna transmit power, cable loss, transmit antenna gain and receiver sensitivity. Transmit Antenna Gain in dB, input1 : Transmit Power in dBm, input2 : Operating Frequency in MHz input3 : Cable loss in dB, input4 : Receiver Sensitivity in dBm, input5 : Free Space Path Loss ...
1/4 wave GP antenna setup calculator. This program helps in the construction details of building a 1/4 wave antenna with ground place - radials. Enter the frequency in MHz and click calculate to get the resulting lengths of the radiating element and the length of the radials. Program compatibility: Windows versions 98-XP-Vista. Cost: FREE.
