OptiBeam - New High Performance Log-Yagi Designs

Innovative High Performance Log-Yagi Antennas from OptiBeam

Shown here one of the new OptiBeam line of High Performance Log-Yagis, the OBYL14-5

Click here to download the complete description of advantages of the new High Performance Log-Yagi designs from OptiBeam


Available Models


OBYL14-5


14 elements on a 24 ft (7.24 m) boom for 20-17-15-12-10 m with the performance of a 3 element monoband Yagi-Uda


Specifications:

Bands

 

20 / 17 / 15 / 12 / 10 m

Gain (dBd) *

 

4.8 / 4.9 / 4.9 / 5.0 / 5.1

Gain (dBi) **

 

12.1 / 12.5 / 12.6 / 12.7 / 12.9

 

 

 

Practical performance
(due to active radiation area)

 

20 to 12 m:    Like a 3 element monoband Yagi
10 m:             Better than a 3 element monoband-Yagi

 

 

 

F/B (dB)

 

24 / 22 / 22 / 22 / 24

SWR

 

All band ranges < 1.5

 

 

 

Elements (number)

 

14

Active elements

 

between 70 and 100% of the entire antenna area is operative

 

 

 

Max. element length

 

11.26 m (37 ft)

Boom length 

 

7.50 m (24.61 ft)

Turning radius 

 

6.65 m (21.82 ft)

Feed lines (number)

 

1 coaxial cable - 50 Ohm

Weight

 

58 kg (127.9 lb)

Wind load at 130 km/h (81 mph)

 

1272 N (286 lb) / 1.60 m2 / 17.22 sqft

 

 

 

 

 

 

* = average gain over dipole in free-space / for comparison: 2 el monobander 4 dBd, 3 el 5-6 dBd

** = average gain at 20 m above ground (= dBd + 2.15 dB isotropic + about 5 dB ground reflection)


OBLY16-5


16 elements on a 33 ft (10.05 m) boom for 20-17-15-12-10 m with the performance of a 3.5 element monoband Yagi-Uda


Specifications:

Bands

 

20 / 17 / 15 / 12 / 10 m

Gain (dBd) *

 

5.4 / 5.4 / 5.4 / 5.4 / 5.7

Gain (dBi) **

 

12.8 / 13.0 / 13.1 / 13.2 / 13.5

 

 

 

Practical performance
(due to active radiation area)

 

Better than a 3 element monoband Yagi

 

 

 

F/B (dB)

 

35 / 35 / 38 / 33 / 35

SWR

 

All band ranges < 1.5

 

 

 

Elements (number)

 

16

Active elements

   

Between 70 and 100% of the entire antenna area is operative

 

 

 

Max. element length

 

11.38 m (37.34 ft)

Boom length

 

10.10 m (33.14 ft)

Turning radius

 

7.58 m (24.87 ft)

Feed lines (number)

 

1 Coaxial cable - 50 Ohm

Weight

 

80 kg (176.4 lb)

Wind load at 130 km/h (81 mph)

 

1471 N (331 lb) / 1.85 m2 / 19.91 sqft

 

 

 


 

 

 

 

 

 

* = average gain over dipole in free-space / for comparison: 2 element monobander 4 dBd, 3 el 5-6 dBd

** = average gain at 20m above ground (= dBd + 2.15 dB isotropic + about 5 dB ground reflection)



OBLY20-5
20 elements on a 49 ft (14.93 m) boom for 20-17-15-12-10 m with the performance of a 4 element monoband Yagi-Uda

Specifications

Bands 20 / 17 / 15 / 12 / 10
Gain (dBd) * 6.4 / 6.4 / 6.4 / 6.4 / 6.4
Gain (dBi) ** 13.5 / 13.9 / 14.0 / 14.1 / 14.2
   
Practical performance
(due to active radiation area) Like a 4 el monoband Yagi
   
F/B (dB)         40 / 45 / 45 / 33 / 30
SWR