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3B-334 Specifications

Frequency Range:

Free Space Forward Gain:

Forward Gain 20m AGL

Front to Back Ratio:

3 dB Horizontal Beamwidth:

Nominal Input Impedance:

SWR accross entire band :

Maximum Power Input:

Boom length:

14.0 - 14.35 MHz

7.2 dBi

12.5 dBi

26 dB

66

50 Ohm

1 : 1.3

More then 1.5 kW

6.4 m

14 MHz

21.0 - 21.45 MHz

7.9 dBi

13.4 dBi

22 dB

65

50 Ohm

1 : 1.3

More then 1.5 kW

21 MHz

28.0 - 28.7 MHz

9.4 dBi

15.3 dBi

20 dB

56

50 Ohm

1 : 1.2

More then 1.5 kW

28 MHz

High Performance HF 3-Band Antennas

- 4

3B-334 sets new standards in radiating performance.

3 monoband antennas on a single full size boom, using a common feed line.

High efficiency, direct 50 Ohm feed. Input power limited by feed line only.

Very high gain, Wideband operation, Low SWR, Excelent F/B, Excelent F/S ratio.

Model:

3B-223

3B-334

3B-4563B-WARC Dipole

Other models & bands: Ask for offer and specifications.

boomelementsG max.14 MHz

G max.21 MHz

G max.28 MHz

7

10

15

price

5 m

6.4 m

11.6 m

10 MHz / 18 MHz / 24 MHz

6.7 dBi

7.2 dBi

9.4 dBi

6.7 dBi

7.9 dBi

10.8 dBi

7.7 dBi

9.4 dBi

11.2 dBi

490 Eur

840 Eur

1290 Eur

280 Eur

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PA7-3-12 Specifications

Frequency Range:Free Space Forward Gain:Forward Gain 20m AGLFront to Back Ratio:3 dB Horizontal Beamwidth:Nominal Input Impedance:

SWR accross entire band :Maximum Power Input:Boom length:

7.0 - 7.3 MHz7.3 dBi11.7 dBi25 dB6650 Ohm

1 : 1.5More then 1.5 kW12 m

7 MHz Full size Heavy Duty Antennas

PA7- -12

High efficiency antennas. Direct 50 Ohm feed. Input power limited by feed line only.


Wind survival speed 135 km/h.

Truss structure, hot-dip galvanized steel antenna boom.

Model:

7 MHz Rotary dipole

PA7-2-6

PA7-3-12PA7-4-18

Other models. Ask for offer and specifications.

boomelements G max.

1

2

34

price

6.4 m

12 m18 m

2.15 dBi

6.2 dBi

7.3 dBi9.4 dBi

280 Eur

690 Eur

1290 Eur2100 Eur

Weight

45 kg

120 kg200 kg

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Frequency Range:Free Space Forward Gain:Forward Gain 20m AGLFront to Back Ratio:3 dB Horizontal Beamwidth:

Nominal Input Impedance:SWR accross entire band :Maximum Power Input:Boom length:Boom Diameter:

14 - 14.35 MHz10.1 dBi15.1 dBi25 dB53

50 Ohm1 : 1.5More then 1.5 kW12.6 m70 mm

PA14-5-12



Wind survival speed 150 km/h. Long boom models.

PA14-3-6

PA14-4-8PA14-5-12


3

45

6.4 m

8.5 m12.8 m

7.3 dBi

9.1 dBi10.1 dBi

450 Eur

700 Eur850 Eur

27 kg

38 kg50 kg


Model: boomelements G max. priceWeight

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Frequency Range:Free Space Forward Gain:Forward Gain 20m AGLFront to Back Ratio:3 dB Horizontal Beamwidth:Nominal Input Impedance:SWR accross entire band :

Maximum Power Input:Boom length:Boom Diameter:

21 - 21.45 MHz10.4 dBi15.8 dBi28 dB5150 Ohm1 : 1.5

More then 1.5 kW9.4 m70 mm

PA21-5-9



Wind survival speed 180 km/h. Long boom models.

PA21-3-5

PA21-4-6

PA21-5-9

PA21-6-12


3

4

5

6

5 m

6.4 m

9.4 m

12.8 m

7.75 dBi

9 dBi

10.4 dBi

11.4 dBi

280 Eur

400 Eur

600 Eur

750 Eur

14 kg

18 kg

30 kg

43 kg



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Frequency Range:Free Space Forward Gain:Forward Gain 20m AGLFront to Back Ratio:3 dB Horizontal Beamwidth:Nominal Input Impedance:

SWR accross entire band :Maximum Power Input:Boom length:Boom Diameter:

28 - 29 MHz10 dBi15.6 dBi25 dB5450 Ohm

1 : 1.5More then 1.5 kW6.4 m50 mm

PA28-5-6

Input power limited by feed line only. Wind survival speed 200 km/h.

PA28-3-4

PA28-4-5

PA28-5-6PA28-7-12


3

4

5

7

4 m

4.85 m

6.4 m

12.8 m

7.6 dBi

9 dBi

10 dBi

12 dBi

240 Eur

330 Eur

430 Eur

690 Eur

10 kg

13 kg

16 kg

40 kg



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Frequency Range:Free Space Forward Gain:Forward Gain 20m AGL

Front to Back Ratio:3 dB Horizontal Beamwidth:Nominal Input Impedance:SWR accross entire band :Maximum Power Input:Boom length:Boom Diameter:Mast Mounting Diameter:Element Starting Diameter:Connector:

50 - 51 MHz13 dBi18.7 dBi

30 dB4150 Ohm1 : 1.3More then 1 kW9 m50 mm43 - 70 mm12 mmSO239 or N

PA50-7-9

Input power limited by feed line only. Wind survival speed 180 km/h.

PA50-3-1.5

PA50-4-3

PA50-6-6

PA50-7-9


3

4

6

7

1.5 m

3 m

6 m

9 m

7.1 dBi

9.2 dBi

11.6 dBi

13 dBi

110 Eur

160 Eur

200 Eur

280 Eur

2.5 kg

4.5 kg

7 kg

11 kg

50 MHz Heavy Duty Antennas

Mast Mounting Clamp M812mm Element mounting plastics


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PA144-3-1.5

PA144-4-3

PA144-6-6

PA144-7-9


3

4

6

7

1.5 m

3 m

6 m

9 m

7.1 dBi

9.2 dBi

11.6 dBi

13 dBi

110 Eur

160 Eur

200 Eur

280 Eur

2.5 kg

4.5 kg

7 kg

11 kg

144 MHz Hi Gain Wideband Antennas

The "Dual" company has been producing antennas for more than 25 years.

Our focus is on: wide bandwidth, designs that work equally well in all weather conditions,

very low SWR and superior G/T, F/B and F/S ratios across the entire frequency band,

excellent mechanical properties, and uncompromised durability.

We perform the design work using the latest full-3D electromagnetic modelling software.

This enables us to accurately include the influence of the boom, insulators, baluns, feedpoint

connections, etc, to the level which is impossible to do with legacy software (NEC2, NEC4,

MiniNEC, EZNEC, 4NEC2, AO, AOP, YO).

Our designs are optimised using the Particle Swarm algorithm, which is considered one of

the best global optimization algorithms. We also use the classic Nelder-Mead Simplexalgorithm for fine-tuning. Our optimization runs frequently exceed 1 million evaluations.

We rely on solid physics, not on "clever" tinkering with antenna elements or spacings.

By paying the greatest attention to all of the important details, we are able to consistently

produce top performance designs.

Our antennas are precision physical instruments, they are real "Precision Antennas" (PA).

PA144-8-


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Dual Katalog 2014 71