ARRL EME Contest winner 70cm Low Noise DX Antenna 70cm23DXA

Victorious DX and EME antenna in ARRL EME Contest 2021. Super low noise characteristics, unbeatable G/T, and maximum gain are key features of 70cm Low Noise DX Antenna 70cm23DXA.

Suppose you want to win the ARRL EME or UHF DX Contest. In that case, you will need a superior antenna not calculated with EZNEC with false performance and false G/T but an antenna with the real and best possible gain and G/T (+8.22 dB)  like this 70cm23DXA calculated with state-of-the-art full 3D EM Simulation Software. 

Four of these antennas were used by PA5Y when he won the ARRL EME Contest in 2021 – Certificate.

 

70cm low noise DX antenna 70cm23DXA ARRL EME contest winner

 

What does 70cm23DXA mean?

• 70cm – 70cm band
• 23 – 23 elements
• DX – Covers DX part of the 70cm band 432-434MHz with low SWR
• A – Boom parts up to 118cm for Airplane “checked baggage” length

 

Electrical Specifications of 70cm Low Noise DX Antenna 70cm23DXA

Frequency Range: 432 – 434 MHz
Free Space Forward Gain: 18.9 dBi
Front-to-Back Ratio: 39 dB
-3 dB Horizontal Beamwidth: 22.6°
-3 dB Vertical Beamwidth: 23.3°
G/T for Tsky=27K Tearth=1800K: +8.22 dB
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 850W
Matching Method: Direct feed through common mode choke (current balun)
Connector: “N”

 

Power versions of 70cm Low Noise DX Antenna 70cm23DXA

“E” – Extra power 7/16 DIN Input connector 7mm SM250 Teflon balun cable: 1500W 70cm23DXAE

 

70cm Low Noise DX Antenna 70cm23DXA Azimuth Radiation Pattern with extreme suppression of all sidelobes

 

ARRL EME Winner 70cm Low Noise DX Antenna 70cm23DXA Elevation Radiation Pattern

 

Mechanical Specifications of Low Noise DX Antenna 70cm23DXA

Number of elements: 23
Element Diameter: 4 mm Aluminum rod
Dipole Diameter: 8 mm Hard Copper tube plastic coated
Longest element: 340 mm
Element Mounting Position: Below the Boom
Balun and Connector: Included
Boom Length: 5.7 m
Boom Size: Tapered Boom 40x40mm, 30x30mm, 20x20mm
The number of Boom Pieces: 5
Guy rope support: Not necessary. Strong boom
Mounting Mast Diameter: 43 – 70 mm 1-11/16″ – 2-3/4″ OD
Clamp: 2 x M8 Stainless Steel
Survival Wind Speed: 150 km/h
Net Weight: 5.6 kg
Gross Weight: 7.2kg
Transportation Length: 120cm

 

70cm Low Noise DX Antenna 70cm23DXAG with guy rope support 70cm23DXAG

 

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

 

All 70cm antennas are here