20el OWA EME Yagi
- Gain
- 19.03 dBi
- F/B
- 25.64 dB
- Elements
- 20
Performance
- Gain
- 19.03 dBi
- Front-to-back
- 25.64 dB
- Elements
- 20
- Impedance
- 50 Ω
Element dimensions
Element dimensions (parsed from legacy body — check before publishing)
| Element | Position | Note |
|---|---|---|
| Ref | 0 mm | parsed from legacy body — confirm position vs length |
| D2 | 1394 mm | parsed from legacy body — confirm position vs length |
| D3 | 2144 mm | parsed from legacy body — confirm position vs length |
| D4 | 2964 mm | parsed from legacy body — confirm position vs length |
| D5 | 3827 mm | parsed from legacy body — confirm position vs length |
| D6 | 4734 mm | parsed from legacy body — confirm position vs length |
| D7 | 5661 mm | parsed from legacy body — confirm position vs length |
| D8 | 6619 mm | parsed from legacy body — confirm position vs length |
| D9 | 7535 mm | parsed from legacy body — confirm position vs length |
| D10 | 8539 mm | parsed from legacy body — confirm position vs length |
| D11 | 9470 mm | parsed from legacy body — confirm position vs length |
| D12 | 10449 mm | parsed from legacy body — confirm position vs length |
| D13 | 11433 mm | parsed from legacy body — confirm position vs length |
| D14 | 12438 mm | parsed from legacy body — confirm position vs length |
| D15 | 13391 mm | parsed from legacy body — confirm position vs length |
| D16 | 14378 mm | parsed from legacy body — confirm position vs length |
| D17 | 15327 mm | parsed from legacy body — confirm position vs length |
| D18 | 16200 mm | parsed from legacy body — confirm position vs length |
Plots
G0KSC SC14420L 20el 144Mhz OWA Yagi Antenna with a 16.2 Metre Length Boom
Premium commercial versions of this antenna at Innovantennas
This Yagi is optimised for 144 to 144.500Mz and is an EME Monster! It has a better G/T figure than most anything on the VE7BQH G/T table although it's design makes it narrow band. Direct 50 Ohm feed so non messy connectivity.
This is a field day/contest/EME antenna which will give excellent performance with veyr high average gain figures and best-in-class G/T figures too.
Dimensions in Metres
Element spacing:
- Ref = 0
- Driven = .554
- D1 = .812
- D2 = 1.394
- D3 = 2.144
- D4 = 2.964
- D5 = 3.827
- D6 = 4.734
- D7 = 5.661
- D8 = 6.619
- D9 = 7.535
- D10= 8.539
- D11= 9.47
- D12= 10.449
- D13= 11.433
- D14= 12.438
- D15= 13.391
- D16= 14.378
- D17= 15.327
- D18= 16.20
Element sizes per element half:
- Ref = .505
- Driven = .498
- D1 = .474
- D2 = .461
- D3 = .452
- D4 = .447
- D5 = .442
- D6 = .437
- D7 = .432
- D8 = .429
- D9 = .428
- D10= .421
- D11= .421
- D12= .416
- D13= .413
- D14= .410
- D15= .410
- D16= .408
- D17= .412
- D18= .437
Performance figures @ 144.300Mhz:
- Froward Gain: 19.03dBi free space
- Front to Back: 25.64dB
Element diameter:
Each element is made out of single piece 8mm aluminum rod Each element half length needs to be doubled in order to gain your total element size. Please add 1mm to each end of each element if using tube instead of rod.
An OWA does not hold a tight pattern. However, with a very good average gain figure, this antennagive excellent G/T performance
A Symmetrical, low-noise elevation plot too
SWR Plot nice and low.
This antenna is 7.79W/L long. See how many Antennas on the VE7BQH list match this one for G/T?
Enjoy the antenna and please send photos!