4m 4elements Antenna 4m4DX 70 -70.5MHz

Low Noise High Gain 4m 4elements Antenna 4m4DX provides stunning performance across the 4-meter band: 70 – 70.5 MHz. Antenna has been calculated with the latest full 3D Electromagnetic Simulation Software, including the influence of the boom, brackets, and connectors.

 

4m 4elements Antenna 4m4DX Appearance:

 

What does 4m4DX mean?

4m – 4m band antenna
4 – 4 Elements
DX – Intended for use from 70-70.5MHz with excellent SWR

 

Electrical specifications of 4m 4elements Antenna 4m4DX

Frequency Range: 70 – 70.5 MHz
Free Space Forward Gain: 8.2 dBi
Front-to-Back Ratio: 27 dB
3 dB Horizontal Beam-width: 60.6°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohm
SWR Across Entire Band: < 1.2
Maximum Power Input: 850W
Matching Method: Direct feed through common mode choke (current balun)
Connector: “N” (SO 239 or 7/16 DIN by request)

 

Power input options by order of 4m 4elements Antenna 4m4DX

“P” – Power version “N” Input connector RG142 5mm Teflon balun cable: 1500W 4m4DXP
“E” – Extra power 7/16 DIN Input connector SF250 7mm Teflon balun cable: 2500W 4m4DXE
“EX” – EXtreme power 7/16 DIN Input connector RG115 10mm Teflon balun cable: 7500W 4m4DXEX

 

Mechanical Specifications of 4m4DX

Number of Elements: 4
Elements Diameter: 12 mm, extensions 10 mm
Dipole Diameter: 12 mm, extensions 10 mm
Longest Element: 2.2 meter
Element Mounting Position: Below the boom
Balun and Connector: Included
Boom Length: 1.46 meter
Boom Size: 20 x 20 mm
Turning Radius: 1.25 meter
Number of Boom Pieces: 1
Guy rope support: Not necessary. Strong boom.
Mounting Mast Diameter: 30 – 50 mm 1-1/4 – 2″ OD
Clamp: M6 Stainless Steel
Survival Wind Speed: 160 km/h
Net Weight: 1.6 kg
Gross Weight: 2.6 kg
Transportation Length: 1.49 meter

 

4m 4elements Antenna 4m4DX Dipole Balun View

The old name of the antenna was PA70-4-1.5B

 

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 perfect SWR on the intended frequency range. Everything is pre-tuned.
• Easy to set up. Everything is labeled, just put number to 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.

 

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