4m 3elements Antenna 4m3DX

4m 3elements Antenna 4m3DX

(1 customer review)


4m 3elements Antenna 4m3DX for portable DXing or stationary use.

SKU: 0405 Category:

4m 3elements Antenna 4m3DX 70 – 70.5MHz

The best performance 4m 3elements Antenna 4m3DX in the class length of 1m. Direct 50 Ohm feed. Designed for portable use as well as a stationary antenna. All screws, nuts, and bolts are stainless steel. The antenna is pre-tuned. The antenna covers the entire band with SWR <1.2 from 70 MHz to 70.5 MHz. Everything is included in the antenna box: Antenna, balun with connector and bracket. Easy to assemble. 15 minutes is sufficient. All antenna parts are labeled, so it is extremely easy to assemble. Just put number to number.  Elements are tapered to reduce vibrations at high winds. Boom is just 1 meter long. The starting element diameter is 12 mm, and the end is 10mm. Tapered elements will reduce the wind load.


4m 3elements Antenna 4m3DX appearance:

4m 3elements Antenna 4m3DX


What does 4m3DX mean?

4m4m band antenna
33 Elements
DX – Intended for use from 70-70.5MHz with excellent SWR


Electrical specifications of 4m 3elements Antenna 4m3DX

Frequency Range: 70 – 70.5 MHz
Free Space Forward Gain: 6.9 dBi
Front-to-Back Ratio: 20 dB
3 dB Horizontal Beam-width: 67°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohm
SWR Across Entire Band: < 1.2
Maximum Power Input: 850 W (or more by request)
Matching Method: Direct feed through common mode choke (current balun)
Connector: “N” default (SO 239 or 7/16 DIN by request)


Power input options by order of 4m 3elements Antenna 4m3DX

“P” – Power version “N” Input connector RG142 5mm Teflon balun cable: 1500W 4m3DXP
“E” – Extra power 7/16 DIN Input connector SF250 7mm Teflon balun cable: 2500W 4m3DXE
“EX” – EXtreme power 7/16 DIN Input connector RG115 10mm Teflon balun cable: 7500W 4m3DXEX


Mechanical Specifications of 4m 3elements Antenna 4m3DX

Number of Elements: 3
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 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: 1.25 kg
Gross Weight: 2.1 kg
Transportation Length: 1.2 meter

The old name of the antenna was PA70-3-1A


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.


Click here to look up all 4-meter antennas: 4m antennas


Weight 2,1 kg
Dimensions 119 × 11 × 10 cm

1 review for 4m 3elements Antenna 4m3DX

  1. Eden

    The antennas are up & working great. I decoded S50B many times yesterday on 8m but was not in the shack then. Have been working with guys in the US and also decoded EI4GEB.
    I hope to make some Qs on 4m when the band opens up.
    73 Eden ZF1EJ

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