DUAL 2m70DX57-2CONN - 2m 17 element + 70cms 40 element (SKU 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.

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.

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 SWRon intended frequency range. Everything is pre tuned.

Another very important detail, When assembled and tested each antenna is complete with all washers, nuts, bolts guy rope supports etc. So 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 does 2m70DX57-2Conn mean?

• 2m band: 144-145 MHz with low SWR and exceptional gain and G/T.
• 70cm band: 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.
• 2Conn: Each band has its own connector.

Specification 2m 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°
• SWR Across Entire Band: < 1.2
• Maximum Power Input: 1500 W
• Coupling to 70cm: -40dB
• 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

Specification 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°
• SWR Across Entire Band: < 1.2
• Maximum Power Input: 850 W
• Coupling to 2m: -30dB
• 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

Specification 2m and 70cm

• Balun and Connector: Included
• Matching Method: Direct feed through common mode choke (current balun)
• Connector: N
• Polarization: Horizontal
• Nominal Input Impedance: 50 Ohms
• 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
• Survival Wind Speed: 150 km/h
• Transportation Length: 1.82m