DUAL 2m70DX57-2conn (Code 1394)

DUAL 2m70DX57-2conn  (code 1394)

Best of the best 2m-70cm 57 element dual-band antenna 2m70DX57-2Conn.Exceptional gain on both 144 and 432 MHz for super weak contest or EME signals. 17 elements on 2 meter and 40 elements on 70cm band on 12 meter boom.

Ultimate design with full 3D Electromagnetic Simulation Software.

F/B and G/T superiority

All antennas have been calculated using state of the art full 3D Electromagnetic Simulation Software including the influence of the boom, bracket, baluns and connectors. The performance of antennas designed using these techniques are exceptional, far better than antennas designed using “wire” programs.

Real gain antennas

Unlike other “manufacturers” who adds up to 1dB to the actual antenna gain, you will get the real maximum antenna gain from all our antennas.

• No tuning antennas
  

Before dispatch, we assemble each and every antenna and test antenna characteristics. That means you may expect exceptionally good electrical and mechanical characteristics including low SWR across the designed range immediately after assembling.
No need to move dipole, cut, tune or use rasp for any element to get perfect SWR on intended frequency range. Everything is pre tuned.

That leads also to another very important detail. When assembled and test each antenna is complete with all washers, nuts, bolts guy rope supports etc.
When packing all parts are already on antenna without possibilities to “forget” important parts to put in the box. So you will always receive complete antenna what we tested just before dispatching.

• Designs that work well in all weather conditions
• Low SWR+ Superior G/T, F/B and F/S ratios across the entire bands
• Excellent mechanical properties
• High durability, built without compromise

What 2m70DX57-2Conn mean?

• 2m band – 144-145 MHz with low SWR and exceptional gain and G/T.
• 70cm band – frequency range 432 to 434 MHz with low SWR and super gain.
• DX – Intended for use for DX hunting or catching super weak EME signals.
• 57 – 57 elements on antenna. 17 elements on 2 meter and 40 elements on 70cm band with extreme gain. Comparable with two monoband antennas on 12m boom.
• 2Conn – Each band has its own connector. You can connect transceiver like IC-9100 on both 2m and 70cm bands with two cables.

Electrical Specifications 2m70DX57-2Conn on 2meter band

• Frequency Range: 144 – 145 MHz
• Free Space Forward Gain: 17.4 dBi
• Front to Back Ratio: 31 dB
• 3 dB Horizontal Beam width: 26.7°
• Polarization: Horizontal
• Nominal Input Impedance: 50 Ohms
• SWR Across Entire Band: < 1.2
• Maximum Power Input: 1500 W
• Matching Method: Direct feed through common mode choke (current balun)
• Connector: “N”
• Coupling to 70cm: -40dB

Mechanical Specifications 2m70DX57-2Conn on 2m band

• Number of Elements: 17
• Element Diameter: 8 mm Aluminum tube
• Dipole Diameter: 8 mm Hard Copper tube plastic coated
• Longest Element: 1035 mm
• Element Mounting Position: Below the boom
• Balun and Connector: Included

Electrical Specifications 2m70DX57-2Conn on 70cm band

• Frequency Range: 432 – 434 MHz
• Free Space Forward Gain: 20.05 dBi
• Front to Back Ratio: 36 dB
• 3 dB Horizontal Beam width: 15.6°
• Polarization: Horizontal
• Nominal Input Impedance: 50 Ohms
• SWR Across Entire Band: < 1.2
• Maximum Power Input: 850 W
• Matching Method: Direct feed through common mode choke (current balun)
• Connector: “N”
• Coupling to 2m: -30dB
• Mechanical Specifications 2m70DX57-2Conn 70 cms
• Number of Elements: 40
• Element Diameter: 4 mm Aluminum rod
• Dipole Diameter: 8mm Hard Copper tube plastic coated
• Longest Element: 340 mm
• Element Mounting Position: Above the boom
• Balun and Connector: Included

Common Mechanical Specifications

• Boom Length: 11.52 m
• Overall number of elements: 57
• Boom Size: Tapered Boom 20x20mm, 30x30mm,
• 40x40mm different wall thickness
• Number of Boom Pieces: 8
• Guy Rope Support: Yes, Included. Four ropes
• Mounting Mast Diameter:43 – 70 mm 1-11/16″ – 2-3/4″ OD
• Survival Wind Speed: 150 km/h
• Transportation Length: 1.82m
• Net Weight: kg
• Gross Weight: kg

• Manual