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Optibeam Antenna
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Optibeam - OB2-80s - 2 Element extra shortened 80m monobande
OB2-80S
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More info
| Bands | 80 | |
| Gain (dBd) * | 3,5 | |
| Gain (dBi) ** | 9,9 | |
| F/B (dB) | 20 | |
| 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) | 2 | |
| Max. Elementlenght (m) | 17,60 | |
| Boomlength (m) | 10,00 | |
| Turning Radius (m) | 10,20 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 100 | |
| Windload at 130 km/h | 1.246 N / 1,55 m² / 16,8 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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