_CT1 GYD_

 

ANTENA DIRECTIVA

YAGI

5 ELEMENTS

Baseada no artigo 'Extremely Long Yagi Antennas' by Gunter Hoch, DL6WU, 3/82

Center frequency: 145.350 Mhz

Gain: 7 a 9 dbd

Drive impedance: aprox. 200 Ohm with folded dipole (D.E.)

Boom lenght: 1,5 m

Boom diameter: 1.9 cm (perfil quadrado)

Elements diameter: 8 mm

The elements pass through and are not insulated the metal boom.

Comulative spacing

Ref.

44.58 cm

61.38 cm

95.59 cm

139.98 cm

REFL.

D.E.

D 1

D 2

D 3

Antenna

Element length

99.51 cm

97.34 cm

92.53 cm

91.66 cm

90.70 cm