Theory of the Quadlongs 4/6-m-Quadlongs 2-m-Quadlong 2-m-4x-Quadlong 2-m-4x-Oblong The Hentenna (2 m, 4m, 6 m)

The DK7ZB-Quadruple-Oblong for 144 MHz

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Antenna Gain

5,6 dBd (in two directions)

Horizontal 3-dB-angle

88,0

Vertical 3-dB-angle

36,8

Impedance

47 +/- j 0 Ohm at 145 MHz

Bandwidth for SWR < 1,5

Theoretical 3,25 MHz, measured > 4 MHz

Horizontal Dimension

29,5 cm

Vertical Dimension

286,5 cm

Weight with connection box

230 g

Lengths of the wires in the Quadruple Oblong. First number of the length is for 145 MHz, the second for 144,3 MHz.

Dimension

Section

Length

Material

Horizontal

3, 4, 6, 9, 12

292 mm (293 mm)

4x1mm brass tube

Vertical

1, 2, 5, 7, 8, 10, 11, 13

714 mm (716 mm)

2-mm-Cu-braid