TYPE :                                      HPSD 4el QUAD

Gain:                 10,22 dBI (8,07 dBD)
Gain: @ 18m heigth:   15,68 dBI
Front to back:        >23,36 dB
Front to side:        >19,52 dB
Azimuth-Beamwidth:    56,4 degrees
SWR bandwidth 2:1     850 Khz
SWR bandwidth 1:1     300 Khz
Max Power:            >10Kw
Longest element:      2,893 meter
Boom length:          5,47 meter

Stacking distance:    9,5 meter
Stacked Total gain:   13,02 dBI
Element diameter:     3 mm

 

 

Below the azimuth plot :

Below the elevation plot

Below the elevation plot at 18 meters heigth above average ground.

below the azimuth plot in freespace of the “stack” (2x 4el quad 9,5 meter spacing)

below the predicted SWR pattern of the single 4el quad.

 

ELEMENT DIAMETER:

The diameter of the wire is 3mm. The wire must be without isolation.

If you do use it with the isolation, all element lengths will be approximently 3-5 percent longer.

If you need other diamters, please mail.

ELEMENT DISTANCES:

Reflector- radiator = 1,715 M

Reflector-Director1=3,04 M

Reflector-Director2=5,46 M

ELEMENT LENGTHS:

Reflector= 2,893 (per side so x4 for total element length)

Radiator= 2,799

Direcor1=2,75

Director2=2,704

 

FEEDING THE ANTENNA:

The antenna has a 50 ohm impedance. It can be direct fed. (of course a 1:1 balun is advised)