The various lateral stabilizing and connecting rods of the tower are made from rectangular shaped aluminum bar (17.0 mm x 6.5 mm) and are secured to the tubes with pop-rivets that are 1/2″x 3/16″ in diameter. To the theoretical length (1/4 lambda) was added 4% due to the width of the antenna. The total length of the radiating system is 10.33 m and its square-shaped base measures 25 cm on a side. This self-supported vertical antenna was made with aluminum tubes of 3 m in length that have an external diameter of 32 mm and a wall thickness of 1.2 mm.
PY1BEK Vertical antenna for ham radio – 40-meter ham band (7 MHz)
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