OB12-4

	OB12-4		12 Element, 4 Band

=>	The OB12-4 is a high effective Yagi for the classical four bands 40, 20, 15 and 10m, four monobanders on one boom.
	->	The OptiBeam high Q air coil reduces the length of the 40m elements nearly lossfree down to a little bit below convenient 15 meters.
	->	Due to the patented OptiBeam „direct coupled driver feed system“ and the especially developed „40m decoupling stubs“ a non compromise feed with a single 50 Ohm coaxial cable is achieved.

OB12-4

Bands

40 / 20 / 15 / 10

Gain (dbd)*

3,6 / 5,2 / 5,9 / 6,8

Gain (dbi)**

10,5 / 12,5 / 13,5 / 14,5

F/B (db)

15 / 25 / 20 / 20

SWR

40 m CW/Europe Setting:

7,00 - 7,05 - 7,10

40 m USA phone Setting:

7,15 - 7,20 - 7,30

14,00 - 14,18 - 14,35

21,00 - 21,25 - 21,45

28,00 - 28,50 - 29,00

1,6 - 1,1 - 1,6

1,6 - 1,1 - 1,9

1,4 - 1,1 - 1,4

1,2 - 1,1 - 1,4

1,5 - 1,1 - 1,4

Elements (number)

Active Elements

2 / 3 / 3 / 4

Max. Elementlength (m)

14,90

Boomlength (m)

7,60

Turning Radius (m)

8,36

Feedlines (number)

1 Coax 50 Ohm

Weight (kg)

Windload at 130km/h

1.250 N / 1,56 m² / 16,8 feet²

Price (EUR) ***

2.459,00

* = 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)

*** = outside EU minus 19% tax - subject to change