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Optibeam Antenna
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Optibeam - OB1-40 - Rotary Dipol 40m - 40
OB1-40
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| Bands | 40 | |
| Gain (dBd) * | 0 | |
| Gain (dBi) ** | 7,0 | |
| F/B (dB) | 0 | |
| VSWR | ||
| Europe setting: 7,00 - 7,05 - 7,15 | 1,2 - 1,1 - 1,5 | |
| USA setting: 7,00 - 7,16 - 7,30 | 1,7 - 1,1 - 1,7 | |
| Elements (number) | 1 | |
| Max. Elementlenght (m) | 14,7 | |
| Turning Radius (m) | 7,35 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 11 | |
| Windload at 130 km/h | 250 N / 0,31 m² / 3,4 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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