10+10 Elements 2m CROSS Antenna 2m20CROSSDX 20Elements
The best Low Noise 2m CROSS Antenna 2m20CROSSDX 20Elements. Perfect for VHF Contest or EME work. Easy to change horizontal to vertical polarization.
2m CROSS Antenna 2m20CROSSDX 10+10 Elements
The best 10 + 10 elements 2m CROSS Antenna 2m20CROSSDX 20Elements with the highest possible gain for its length. Great for Terrestrial VHF Contest or EME work.
What does 2m20CROSSDX mean?
- 2m – 2m band
- 20 – 20 elements, 10 elements of horizontal polarization, and 10 elements of vertical polarization
- CROSS – CROSS Yagi antenna has horizontal and vertical elements – separated on a single boom, the antenna is mounted in a “+” format.
- DX – For use in DX part of the band 144-145MHz.
Electrical Specifications of 2m CROSS Antenna 2m20CROSSDX 20Elements
Frequency Range: 144 – 145 MHz
Free Space Forward Gain: 14.4 dBi
Front-to-Back Ratio: 30 dB
-3 dB Horizontal Beamwidth: 36°
-3 dB Vertical Beamwidth: 39.6°
Polarization: Horizontal and Vertical (RHCP, LHCP with phase shift)
Distance Between Dipoles: 520mm
Isolation Between Antennas: More than 30dB
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: <1.2
Maximum Power Input: 2 x 1500W
Matching Method: Direct feed through common mode choke (current balun)
Connectors: 2 x “N”
What about Orthogonality and related to that isolation between antennas (coupling) say SM5BSZ
“The NEC simulations above show that an isolation of 20 dB is sufficient. This means that the obvious way of checking a cross Yagi is to connect one of the feed lines to a transmitter with known output, and a power meter and a dummy load to the other. The attenuation is then measured directly through the power arriving at the dummy load. If it is below -20 dB compared to the transmitted power everything is fine. ”
Excellent results of isolation achieved -30 dB. Much better than SM5BSZ suggested:
Extra power version of 2m CROSS Antenna 2m20CROSSDX 20Elements
“E” – Extra power 7/16 DIN Input connector 7mm SM250 Teflon balun cable: 2 x 2000W 2m20CROSSDXE
The mechanical version of 2m CROSS Antenna 2m20CROSSDX 20Elements
“G” – Guy rope support for extra safety and harsh environment 2m20CROSSDXG
2m CROSS Antenna 2m20CROSSDX 20Elements Azimuth Radiation Pattern
Mechanical Specifications of 2m CROSS Antenna 2m20CROSSDX 20Elements
Number of Elements: 20 (10 + 10)
Element Diameter: 8mm Aluminum tube
Dipole Diameter: 8 mm Hard Copper tube plastic coated
Longest Element: 1040 mm
Element Mounting Position: CROSS antenna – 2 Sides
Balun and Connector: Included
Boom Length: 5.47 m
Single Antenna Length: 4.91m
Boom Size: Tapered Boom 40 x 40 mm, 30×30 mm
Turning Radius: 2 m
Number of Boom Pieces: 4
Guy rope support: Not Necessary (by order)
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: 8.6kg
Transportation Length: 1.49 m
2m CROSS Antenna 2m20CROSSDX 20Elements. Two Antennas Gain Side by Side (Horizontal Stack) 3100 mm
Horizontal Antenna (polarization). Gain 17.3 dBi for F/S -13.1 dB
Vertical Antenna (polarization). Gain 17.45 dBi for F/S -11.4 dB
2m CROSS Antenna 2m20CROSSDX 20Elements. Two Antennas Gain for Vertical Stack 3100 mm
Horizontal Antenna (polarization). Gain 17.45 dBi for F/S -11.4 dB
Vertical Antenna (polarization). Gain 17.3 dBi for F/S -13.1 dB
2m CROSS Antenna 2m20CROSSDX 20Elements. Four Antennas Gain in “H” configuration 3100 x 3100 mm
Horizontal Polarization: Gain 20.35 dBi for F/S -12.7 dB
Vertical Polarization: Gain 20.35 dBi for F/S -11.4 dB
Excellent SWR on a built 2m CROSS Antenna 2m20CROSSDX 20Elements
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 exceptionally good 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-CROSS-20-6BP
For the XPOL variant of the same antenna look here.
Check all 2m CROSS antennas
All 2m antennas: 2 meter antennas
These antennas are the most durable antennas I have ever had.
I have set them up more than 100 times in portable operations.