OptiBeam - OB2-40M

	OB2-40M		Moxon Yagi 40m

High efficient, extremely compact yagi by the use of the ‚Moxon Rectangle Technique‘

(= folded element tips) and the ‚OptiBeam Air Coil‘ (see ‚40m antenna parts‘)

physically only 50% of a 2 element full size yagi

gain only about 0.6 dbd less compared to a yagi of full size

extremely good bandwidth and very fine SWR

50 Ohm direct feed

interaction to yagis in the frequency range of of 10 to 20m which is usual for other 40m beams is totally avoided here due to special „decoupling stubs“, designed by OptiBeam

OB2-40M

Bands

Gain (dbd)*

3,5

Gain (dbi)**

10,7

F/B (db)

15 - 18

VSWR Europa Setting: 7,00 - 7,05 - 7,10 - 7,30

1,5 - 1,15 - 1,4 - 1,9

VSWR USA Setting: 7,15 - 7,20 - 7,30

1,5 - 1,15 - 1,4

Elements (number)

Max. Elementlength (m)

10,60

Boomlength (m)

5,60

Turning Radius (m)

6,00

Feedlines (number)

1 Coax 50 Ohm

Weight (kg)

Windload at 130km/h

430 N / 0,54 m² / 5,9 feet²

Price (EUR) ***

1.533,00

* = 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