8m 4m DualBand Antenna 8m4m11DXP 11 Elements

World’s first 8m 4m DualBand Antenna 8m4m11DXP with single connector. Covers 8m and 4m bands. On the 8m band, elements with an initial diameter of 15 mm were used. This allows for a strong construction and resistance to wind and snow. Antenna with 11 elements will produce booming signals with 59+ reports on both bands. 5 elements for 8m and 6 for 4m with a common connector will give you maximum gain on both bands. The antenna behaves as two mono-band antennas.

 

8m 4m DualBand Antenna 8m4m11DXP Appearance:

 

What does 8m4m11DXP mean?

• 8m – 8m band
• 4m – 4m band
• 11 – 11 elements. 5 elements for 8m and 6 elements for 4m band
• DX – For DX-ing
• P – Power. Maxim power on both bands 1500W

 

8m Electrical specifications of 8m 4m DualBand Antenna 8m4m11DXP

Frequency Range for transmitting and receiving: 40.5-40.9 MHz
Frequency Range for receiving: 40-41 MHz with excellent gain
Free Space Forward Gain: 10.1 dBi
Front-to-Back Ratio: 24 dB
-3 dB Horizontal Beamwidth: 51.7°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 1500W
Matching Method: Direct feed through common mode choke (current balun) for both bands
Connector: “N” for both bands

 

8m 4m DualBand Antenna 8m4m11DXP Azimuth Radiation Pattern

 

4m Electrical specifications of 8m 4m DualBand Antenna 8m4m11DXP

Frequency Range: 70-70.5 MHz
Free Space Forward Gain: 11.7 dBi
Front-to-Back Ratio: 25 dB
-3 dB Horizontal Beamwidth: 47.1°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 1500W
Matching Method: Direct feed through common mode choke (current balun) for both bands
Connector: “N” for both bands

 

8m 4m DualBand Antenna 8m4m11DXP 4m Azimuth Radiation Pattern

 

8m and 4m Mechanical Specifications of 8m4m11DXP

8m Number of Elements: 5
4m Number of Elements: 6
Overall number of elements:11
8m Tapered elements. Center tube 15mm, extensions 12, 10, and 8mm
4m Tapered elements. Center tube 12mm, extensions 10
Element Mounting Position: Below the boom
Balun and Connector: Included
Boom Length: 5.5 m
Tapered boom: 40 x 40 mm, 30 x 30 mm, 20 x 20 mm
Turning Radius: 3 m
The Number of Boom Pieces: 5
Guy rope support: Yes – Included
Mounting Mast Diameter: 43 – 70 mm 1-11/16″ – 2-3/4″ OD
Bracket: Stainless Steel AISI 316L (A4)
Clamp: 2x M8 Stainless Steel
Survival Wind Speed: 150 km/h
Net Weight: 9 kg
Gross Weight:
Transportation Length: 1.2 m

 

Antennas-Amplifiers Product Benefits. A Major advance in antenna design.

• F/B and G/T superiority. All antennas have been calculated using state-of-the-art full 3D EM modeling software including the influence of the boom, bracket, baluns, and connectors. The performance of antennas designed using these techniques is exceptional, far better than antennas designed using the EZNEC program.
• No tuning antennas. Before dispatch, we assemble and test each antenna’s characteristics. No need to tune any element to get a perfect SWR on the intended frequency range. Everything is pre-tuned.
• Easy to set up. Everything is labeled, just put a number to a number. Everything is included in the box: Antenna, balun, bracket, and guy rope support if needed. Yours is to assemble and have fun!
• Mechanical properties. We believe that our antennas are the world’s strongest antennas and are mechanically constructed much better than any antennas from other manufacturers.