Optibeam Antenna

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Optibeam - OB12-6 - 12 Element, 6 Band - 40/20/17/15/12/10 View larger

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Optibeam - OB12-6 - 12 Element, 6 Band - 40/20/17/15/12/10

OB12-6

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Bands   40 / 20 / 17 / 15 / 12 / 10    
Gain (dBd) *   3,5 / 4,2 / 4,3 / 4,6 / 5,0 / 5,7    
Gain (dBi) **   10,3 / 11,6 / 11,9 / 12,3 / 12,7 / 13,5    
F/B (dB)   15 / 13 / 14 / 16 / 18 / 26    
VSWR        
40 m CW/Europe setting:        
7,00 - 7,05 - 7,15   1,6 - 1,1 - 1,8    
40 m USA phone setting:        
7,15 - 7,20 - 7,30   1,6 - 1,1 - 1,8    
14,00 - 14,18 - 14,35   1,4 - 1,2 - 1,4    
18,07 - 18,13 - 18,17   1,5 - 1,1 - 1,2    
21,00 - 21,25 - 21,45   1,5 - 1,1 - 1,2    
24,89 - 24,94 - 24,99   1,5 - 1,1 - 1,2    
28,00 - 28,50 - 29,00   1,5 - 1,2 - 1,7    
         
Elements (number)   12    
Active Elements   2 / 2 / 2 / 2,5 / 3 / 3    
Max. Elementlength (m)   14.68    
Boomlength (m)   6.1    
Turning Radius (m)   7.95    
Feedlines (number)   1 Coax 50 Ohm    
Weight (kg)   65    
Windload at 130 km/h   1.504 N / 1,88 m² / 20,3 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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Optibeam - OB12-6 - 12 Element, 6 Band - 40/20/17/15/12/10

Optibeam - OB12-6 - 12 Element, 6 Band - 40/20/17/15/12/10

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