![]() To optimize the antenna for a frequency RANGE, do the calculations twice, once for the low end of the range and once for the high end then average the two and plan to adjust the VSWR on both ends of the range as needed. ![]() Click on Calculate and the optimum length for that frequency will be displayed in meters, feet, and inches. Each radial is evenly spaced (90 degrees apart from each other) around the vertical element. The normal quarter wave ground plane antenna consists of a vertical radiator which is insulated and centered between 4 horizontal surrounding radials which extend out from the base of the antenna. This calculator is designed to give the vertical length (height) of a quarter wave ground plane antenna, and the length of each of the four radials (often called radiators) for the frequency chosen. Jungle Formula Bite & Sting, in rollerpen- of sprayvorm, voor verzachting en verkoeling na een insectenbeet of -steek (van bijv. ![]() Ideaal voor gebruik binnen- en buitenshuis & voor vakanties in Europa. This calculator requires the use of Javascript enabled and capable browsers. Anti-insect spray met 20 Deet, tot 6 uur bescherming, aangename geur. Amateur Quarter Wave Ground Plane Antenna Calculator Amateur Quarter Wave ![]()
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