RW4HFN Limited Space Balcony Dipole Antennas

Figure 16 shows two designs of the shortened dipole antenna with spiral loads for the 40 meter band. Spiral loads of the both antennas made like a rectangle, distance between sides is 10- cm, first horizontal and vertical side is 10 cm long, then sides grow according to winding.

First antenna was simulated with length in 3- meter, main vibrator was simulated from aluminum tube in diameter of 25- mm, gamma match simulated from aluminum tube in diameter of 12- mm. Distance between vibrator and gamma match is 10- cm.

Figure 16 Design of the Shortened Dipole Antenna with Spiral Loads for the 40 meter Band

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