Excellent portable and EME 2m 9Elements Lightweight Antenna 2m9DXA

Low noise design VHF contest and EME in mind was selected when deigned 2m 9Elements Lightweight Antenna 2m9DXA. The disassembled length for this portable antenna is adjusted for a “Checked Baggage” airplane length of 119 cm or 47 inches.

The highest-class lightweight antenna 2m9DXA is perfect to take on VHF Contest or EME expedition. Designed to pass Airline Luggage Restrictions. Excellent noise design.

 

2m 9Elements Lightweight Antenna 2m9DXA Low Noise EME

This antenna is great for terrestrial VHF contests or EME work.

 

What does 2m9DXA mean?

• 2m – 2m band
• 9 – 9 elements
• DX – Covers DX part of 2m band 144-145MHz
• A – Boom parts up to 1.2m

Electrical Specifications of 2m 9Elements Lightweight Antenna 2m9DXA

Frequency Range: 144 – 145 MHz
Free Space Forward Gain: 14.3 dBi
Front-to-Back Ratio: 32 dB
-3 dB Horizontal Beamwidth: 37°
-3 dB Vertical Beamwidth: 40.2°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 500W
Matching Method: Direct feed through common mode choke (current balun)
Connector: “N”

 

Power versions of portable 2m 9Elements Lightweight Antenna 2m9DXA

“P” – Power version “N” Input connector RG142 5mm Teflon balun cable: 1500W 2m9DXAP
“E” – Extra power 7/16 DIN Input connector 7mm SM250 Teflon balun cable: 2000W 2m9DXAE
“EX” – EXtreme power 7/16 DIN Input connector 10mm RG115 Teflon balun cable: 5000W 2m9DXAEX

 

Mechanical Specifications of 2m 9Elements Lightweight Antenna 2m9DXA

Number of elements: 9
Element Diameter: 8 mm Aluminum tube
Dipole Diameter: 8 mm Hard Copper tube plastic coated
Longest element: 1040 mm
Element Mounting Position: Below the Boom
Balun and Connector: Included
Boom Length: 4.67 m
Boom Size: Tapered Boom 20x20mm, 30x30mm, 20x20mm
Number of Boom Pieces: 4
Guy rope support: Not necessary. Strong boom
Mounting Mast Diameter: 43 – 70 mm 1-11/16″ – 2-3/4″ OD
“RA” bracket: Possibility to easily turn the antenna in vertical polarization
Survival Wind Speed: 150 km/h
Transportation Length: 1.19 m
Antenna Weight: 4.3 kg

 

2m 9elements low noise antenna 2m9DXA RA Bracket

 

2m 9 elements lightweight low noise antenna 2m9DXA measured perfect SWR in the whole band

 

Horizontal Stacking Distances for F/S -12.5 dB lightweight antenna 2m9DXA:

Two antennas: 3.15m. Gain 17.2 dBi (+2.9 dB)
Four antennas: 3.3m. Gain 20.2 dBi (+5.9 dB)

 

Vertical Stacking Distances for F/S -12.5dB low noise EME antenna 2m9DXA

Two antennas: 2.95m. Gain 17.2 dBi (+2.9 dB)
Four antennas: 3.05m. Gain 20.2 dBi (+5.9 dB)

 

Lower gain and a better suppression of all sidelobes. Sometimes good in urban (high noise) areas:

Horizontal stack 2.6 m for gain 16.93 dBi F/S< -18.7 dB
Horizontal stack 2.75 m for gain 17.04 dBi F/S< -16.5 dB
Vertical stack 2.5 m for gain 16.95 dBi F/S< -17 dB

Or anything between…

 

Lee WW2DX will use these 2m9DXA and 2m12DX7 antennas on his extremely successful EME expeditions:

 

2m 9Elements Light Weight Antenna 2m9DXA EME expedition  V26PD – Antigua Mar 2018 – FK97db

 

The antennas 2m9DXA (PA144-9-5A) performed EXCEPTIONALLY well during the WORST EME conditions. Very impressive, congratulations!

The pair of 9’s are in the process of being installed in FN65 in Maine along the Atlantic Ocean for a 100% fully remote EME station.  Lee WW2DX

 

Pair of 2m 12 Elements Low Noise EME Antenna 2m12DX7 on EME expedition FJ/WW2DX

 

CY9C EME expedition with pair 2m12DXA

 

2m 12Elements EME Expedition Antenna 2m12DXA to CY9C WW2DX

 

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.
Comparison of EM simulation software

• No tuning antennas
  

Before dispatch, we assemble each antenna and test antenna characteristics. That means you may expect excellent electrical and mechanical attributes 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 to assemble and have fun!

The old name of the antenna was PA144-9-5A

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