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)