2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C Two Connectors

2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C with two separate antennas on the same boom. Behaves as two extreme-gain monoband antennas. The 2m antenna has almost the same performance as one of the best Low Noise Yagis with the best G/T for its length 2m12DXP. Confirmed by the latest VE7BQH table. 2m or 70cm EME contacts are easy with this excellent antenna. Look at the EME chat. Maximum power on 2m is 1500W and 850W on 70cm. 12 elements on 144MHz and 25 elements on 70cm.

 

2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C Appearance:

 

The antenna could be produced in several versions:

• SKU: 1370: 2m70cm37DX-2C “DX” version 144-145MHz and 432-434MHz (This antenna)
• SKU: 1375: 2m70cm37W-2C “W” version 144-146MHz and 432-440MHz
• SKU: 1376: 2m70cm37Wide-2C “Wide” version 144-148MHz and 430-450MHz
• SKU: 1380: 2m70cm37DXA-2C The same as “DX” version. Box 1.2m
• SKU: 1385: 2m70cm37WA-2C The same as “W” version. Box 1.2m

 

What does 2m70cm37DX-2C mean?

• 2m – 2m band with low SWR and excellent gain
• 70cm – 70cm band with low SWR and excellent gain
• 37 – 37 elements. 12 Elements on 2m and 25 elements on 70cm
• DX – Covers 144-145 and 432-434MHz
• 2C  – 2Connectors. One for 2m and the other for 70cm

 

2m Electrical Specifications of 2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C

Frequency Range: 144 – 145 MHz
Free Space Forward Gain: 15.6 dBi
Front-to-Back Ratio: 33 dB
3 dB Horizontal Beamwidth: 32.4°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 1500W
Matching Method: Direct feed through common mode choke (current balun)
Connector: “N”
Coupling to 70 cm: -40 dB

 

2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C 2m Azimuth Radiation Pattern

2m top-notch Azimuth Radiation Pattern achieved with careful design and optimization.

 

70cm Electrical Specifications of 2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C

Frequency Range: 432 – 434 MHz
Free Space Forward Gain: 18.4 dBi
Front-to-Back Ratio: 27 dB
3 dB Horizontal Beamwidth: 20.6°
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
Maximum Power Input: 850 W
Matching Method: Direct feed through common mode balun
Connector: “N”
Coupling to 2m: -30 dB

 

2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C 70cm Azimuth Radiation Pattern

 

Mechanical Specifications of 2m-70cm The Best Dual Band Antenna 2m70cm37DX-2C

2m Number of Elements: 12
70cm Number of Elements: 25
2m Elements Diameter: 8 mm Aluminum tube
70cm Elements Diameter: 4 mm rod
Dipoles Diameter: 8 mm Hard Copper tube, plastic coated
2m Element Mounting Position: Below the Boom
70cm Element Mounting Position: Above the Boom
Balun and Connectors: Included
Boom Length: 6.87m
Boom Size: Tapered Boom 20x20mm, 30x30mm, 40x40mm
Number of Boom Pieces: 5 or 6 for “A” version
Guy Rope Support: Yes, Included
Mounting Mast Diameter: 43 – 70 mm 1-11/16″ – 2-3/4″ OD
Bracket with M8 screws Stainless Steel
Survival Wind Speed: 150km/h
Net Weight: 9.1kg
Gross Weight: 11kg
Transportation Length: 1.5m or 1.2m for “A” version

 

Two Antennas Stacking Distances of 2m70cm37DX-2C

Horizontal 2950 mm:
2m Gain 18.1 dBi (+2.5 dB)
70cm Gain 21.45 dBi (+3.05 dB)

Vertical 2750mm:
2m Gain 18.1 dBi (+2.5 dB)
70cm Gain 21.5 dBi (+3.1 dB)

 

Four 2m70cm37DX-2C Antennas in “H” configuration 2950 x 2750 mm

2m Gain 20.6 dBi (+5 dB)
70cm Gain 24.5 dBi (+6.1 dB)

The old name of the antenna was 2m70DX37-2Conn (PA144-432-37-7-2CBGP)

Look at the review by HB9HLM

 

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 and are mechanically constructed much better than any antennas from other manufacturers.

 

All 2m / 70cm antennas: 2m/70cm antennas
2m / 70cm Common Connector antenna
2m / 70cm Two Connector Dual Band