Fine 14 elements 2m CROSS Antenna 2m14CROSS

Full frequency range 144 – 146 MHz 2m CROSS Antenna 2m14CROSS with 7+7 elements devoted for EME and LEO Satellites. Used as part of “Big Leo Pack” with added RHCP Kit

2m CROSS Antenna 2m14CROSS is designed to cover the complete 2m band 144 – 146 MHz and any radio modes like CW, SSB, FM, Q65, FT8, and all kinds of communications like DX-ing, Contesting, FM work, and LEO satellites…

 

LEO satellites – Low Earth orbit satellites in Ham Radio.

LEO satellites have a circular (or elliptical) orbit at the height of 250–2000 km from the Earth’s surface. The maximum time during which a satellite is above the local horizon for an observer on the Earth is up to 20 min. This time is used to transfer data, images, and photographs to selected ground stations positioned in strategic locations.

Several Low Earth Orbit (LEO) OSCAR satellites use frequency modulation (FM). These are also commonly referred to as “FM LEOs” or the “FM Birds”. Such satellites act as FM amateur radio repeaters that can be communicated by using commonly available amateur radio equipment.

Wide-band operation with low SWR. The antenna could be used for any radio modes like CW, SSB, FM, Q65, and all kinds of communications like EME, DX-ing, Contesting, Repeater work, and LEO satellite…

 

2m CROSS Antenna 2m14CROSS for EME and LEO Satellites

 

What does 2m14CROSS mean?

• 2m – 2m band full coverage 144-146MHz
• 14 – 14 elements, 7 elements of horizontal polarization, and 7 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.

 

Electrical Specifications of 2m CROSS Antenna 2m14CROSS

Frequency Range: 144 – 146 MHz
Free Space Forward Gain: 12.7 dBi
Front-to-Back Ratio: 32 dB
-3 dB Horizontal Beamwidth: 43.4°
-3 dB Vertical Beamwidth: 50.4°
Polarization: Horizontal and Vertical (RHCP, LHCP with phase shift)
Distance Between Dipoles: 520mm
Degrees: 90°
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:

 

2m14CROSS Big Leo Pack Measured Coupling – Orthogonality on average -30dB

 

Extra power version of 2m CROSS Antenna 2m14CROSS

“E” – Extra power 7/16 DIN Input connector 7mm SM250 Teflon balun cable: 2 x 2000W 2m14CROSSE

 

Perfect 2m CROSS Antenna 2m14CROSS Azimuth Radiation Pattern

 

Mechanical Specifications of 2m CROSS Antenna 2m14CROSS

Number of Elements: 14 (7 + 7)
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: 3.5 m
Boom Size: Tapered Boom 30×30, 20×20 mm
Turning Radius: 2 m
Number of Boom Pieces: 3
Guy rope support: No, strong boom
Mounting Mast Diameter: 43 – 70 mm 1-11/16″ – 2-3/4″ OD
Clamp: “RA” Bracket
Survival Wind Speed: 150 km/h
Net Weight: 4.3kg
Gross Weight: 6 kg
Transportation Length: 119 cm

 

Big LEO, FM, and EME Antenna

 

Big Leo Pack Antennas for LEO Satellites 2m14CROSS and 70cm30CROSS. “Big Leo Pack” with added RHCP Kit. 

 

What others say:

2m CROSS Antenna 2m14CROSS at SM0TGU

 

This is the best antenna I have mounted so far when looking at the material quality!
The initial test via RS-44 satellite is very good, with more gain compared with my old 6 el Yagis. I also think the antenna has less noise.

Lars SM0TGU

 

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-CROSS-14-3.5AP

 

Twin Sister 70cm antenna with the same 3.5m boom used in Big Leo Pack

 

If this 14 elements 2m CROSS Antenna 2m14CROSS is too big:

Look at the smaller 8 elements rear mount Yagi 2m LEO Pack Antenna 2m8CROSS

Or if it is too small look at the ultimate 20 elements 2m CROSS Wideband Antenna 2m20CROSSWB

Check all 2m CROSS antennas

Or LEO Satellites Complete Packs