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Optibeam Antenna
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Optibeam - OB3-80+ - 3 Element Yagi 80m (SSB+CW) - 80
OB3-80PLUS
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| Bands | 80 | ||||||
| Gain (dBd) * | 4.85 | ||||||
| Gain (dBi) ** | 11.25 | ||||||
| F/B (dB) | 21 | ||||||
| VSWR (with the OptiBeam multi switch): | |||||||
| SSB 1: 3,770 - 3,795 - 3,830 | 2,0 - 1,1 - 2,0 | ||||||
| SSB 2: 3,720 - 3,745 - 3,790 | 2,0 - 1,1 - 2,0 | ||||||
| SSB 3: 3,680 - 3,705 - 3,750 | 2,0 - 1,1 - 2,0 | ||||||
| CW: 3,500 - 3,520 - 3,565 | 1,7 - 1,2 - 2,0 | ||||||
| Elements (number) | 3 | ||||||
| Max. Elementlenght (m) | 23 | ||||||
| Boomlenght (m) | 20 | ||||||
| Turning Radius (m) | 15.6 | ||||||
| Feedlines (number) | 1 Coax 50 Ohm | ||||||
| Weight (kg) | 210 | ||||||
| Windload at 130 km/h | 2.434 N / 3,05 m² / 33,1 feet² | ||||||
| * = average gain over dipol in free-space / for comparison: 2 el monobander 4 dBd, 3 el 5-6 dBd |
| ** = average gain at 20m above ground (= dBd + 2.15 dB isotropic + about 5 dB ground reflection) |
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