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Optibeam Antenna
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Optibeam - OB3-40 - 3el Monoband-Yagi 40m - 40m
OB3-40
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More info
| Bands | 40m | |
| Gain (dBd)* | 4,52 | |
| Gain (dBi)** | 11,06 | |
| F/B (dB) | 18 | |
| SWR: | ||
| 7,000 - 7,065 - 7,200 | 1,7 - 1,1 - 1,7 | |
| (other frequency ranges adjustable) | ||
| Elements (number) | 3 | |
| Max. Elementlength (m) | 14,86 | |
| Boomlength (m) | 9,00 | |
| Turning Radius (m) | 8,67 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 70 | |
| Windload at 130 km/h | 1.080 N / 1,35 m2 / 14,51 feet2 | |
| 6 KW SSB)*** |
| * = average gain over dipol in free-space / for comparison: 2el full sized Monobander 4 dBd, 3el 5-6 dBd | ||
| ** = average gain at 20m above ground (= dBd + 2.15 dB isotropic + about 5 dB ground reflection) |
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