Above the freespace azimuth pattern.
Above the freespace elevation pattern
Above 16,5 meters high above average ground almost 17dBi at a 9 degree angle
Above the SWR diagram.
Above the Gain Fr/back and Fr/rear versus frequency response.
For: DX portion 11 meter band
Antenna Type: 5el OBLONG QUAD
Designed by: 19DX348 (YU7XL original idea)
Boom length: 9,205 Meter
Gain: 11,56 dBI (@27,555 Mhz)
FB <25,33 dB
FR <23,72 dB
Impedance: 50 ohms, direct fed
SWR below 1:1.1 > 250 Khz.
SWR below 2:1 > 950 Khz
Element dimensions:
The elements are made from 22mm tube and 18mm aluminium tube.
The horizontal parts are all 22mm in diameter the vertical parts are 18mm in diameter.
ALL VERTICAL ELEMENTS ARE 2,12 meter in length.
Element Length Distance
Reflector 3,792 m 0 m
Radiator 3,577 m 1,387 m
Director 1 3,408 m 2,725 m
Director 2 3,228 m 5,915 m
Director 3 3,069 m 9,205 m