For: DX portion 11 meter band
Antenna Type: 4el OWA-YAGI
optimum wide band array
Designed by: HPSD version 1.01 Nov 2005
Boom length: 3,82 Meter
Gain: 8,42 dBI (@27,555 Mhz)
FB <22 dB
FR <22 dB
Impedance: 50 ohms, direct fed
SWR below 1:1.1 > 350 Khz.
SWR below 2:1 > 1700 Khz
Above the azimuth plot. 8,42 dBI gain.
Above the freespace elevation plot.
Below the predicted SWR plot:
All elements are made from:
3 meter long 22 mm tubes (center piece) inserted with 18mm (end tips).
Distances:
Reflector: Radiator = 1,329 Meter
Reflector: Director 1 = 1,834 meter
Reflector: Director 2 = 3,82 Meter
Length:
Reflector = 2x 2,736 Meter (5,472 Meter)
Radiator = 2x 2,657 Meter (5,314 Meter)
Director 1 = 2x 2,523 Meter (5,046 Meter)
Director 2 = 2×2,4062 Meter (4,813 Meter)
4 elements OWA using INCH ELEMENT DIAMETER:
A home made 4el OWA using inches at : 91SD/OC075 (91SD750).
Thank you for sending the picture Itji !
For: DX portion 11 meter band
Antenna Type: 4el OWA-YAGI
optimum wide band array
Designed by: HPSD version 1.01 Nov 2005
Boom length: 3,82 Meter
Gain: 8,32 dBI (@27,555 Mhz)
FB <22 dB
FR <22 dB
Impedance: 50 ohms, direct fed
SWR 1:1.1 < 350 Khz.
SWR 2:1 < 1700 Khz
Above the azimuth plot. 8,34 dBI gain.
Above the freespace elevation plot.
Below the predicted SWR plot:
All elements are made from:
5/8 inch and 1/2 inch tubing.
The 5/8 inch tubing is 3 meters long the 1/2 inch tubing are inserted on both ends to complete the element length.
Distances:
Reflector: Radiator = 1,450 Meter
Reflector: Director 1 = 1,920meter
Reflector: Director 2 = 3,82 Meter
Length:
Reflector = 2x 2,750 Meter (5,50 Meter)
Radiator = 2x 2,700Meter (5,40 Meter)
Director 1 = 2x 2,560 Meter (5,12 Meter)
Director 2 = 2×2,435 Meter (4,87 Meter)