Exceptional gain, F/B, and G/T on both bands are achieved with DualBand 2m 70cm Antenna 2m70DX57-2Conn. The super-weak contest, DX or EME signals won’t be a problem with 17 elements on 2m and 40 elements on 70cm on a 12m boom antenna. Ultimate design with full 3D Electromagnetic Simulation Software. 

 

What 2m70DX57-2Conn mean?

2m – 2m band – 144-145 MHz with low SWR and exceptional gain and G/T
70 – 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 the antenna. 17 elements on 2 meters and 40 elements on 70cm. Comparable with two monoband antennas on a 12m boom.
2Conn – Each band has its own connector. You can connect transceivers like IC-9100 on both 2m and 70cm bands with two cables.

With less than 50 W with this 2m70DX57-2Conn antenna, you can work many EME stations.

 

Dipoles View on DualBand 2m 70cm Antenna 2m70DX57-2Conn

 

Electrical Specifications of DualBand 2m 70cm Antenna 2m70DX57-2Conn on 2m band

Frequency Range: 144 – 145 MHz
Free Space Forward Gain: 17.4 dBi
Front-to-Back Ratio: 31 dB
3 dB Horizontal Beamwidth: 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 Beamwidth: 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 on 70 cm band

Number of Elements: 40
Element Diameter: 4 mm Aluminum rod
Dipole Diameter: 8 mm Hard Copper tube plastic coated
Longest Element: 340 mm
Element Mounting Position: Above the boom
Balun and Connector: Included 

 

2m70DX57-2Conn 144MHz and 432MHz Dual-Band Antenna on 12m Boom Appearance

 

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

 

• 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 is exceptional, far better than antennas designed using “wire” programs.

• No tuning antennas
  

Before dispatch, we assemble each antenna and test antenna characteristics. That means you may expect exceptionally good electrical and mechanical performance including low SWR across the designed range immediately after assembling.
No need to tune the dipole, or any other 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. The antenna can be assembled with hand tools in a couple of minutes.
Everything is included in the antenna box: Antenna, balun with connector, and bracket. Yours is just to assemble and have fun!