70cm CROSS Antenna 70cm30CROSS

70cm CROSS Antenna 70cm30CROSS


70cm CROSS Antenna 70cm30CROSS for EME, DX-ing, Tropo, FM Repeater, and LEO satellites

SKU: 1735 Category:

Excellent 30 Elements 70cm CROSS Antenna 70cm30CROSS

Full frequency range 430 – 440 MHz 70cm CROSS Antenna 70cm30CROSS with 15+15 Elements for EME and LEO Satellites. Used as part of “Big Leo Pack” with added RHCP Kit

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.


What does 70cm30CROSS mean?

  • 70cm – 70cm band 430-440MHz
  • 3030 elements, 15 elements of horizontal polarization, and 15 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.


70cm CROSS Antenna 70cm30CROSS for LEO Satellites as part of “Big Leo Pack

70cm CROSS Antenna 70cm30CROSS


This 30-element 70cm CROSS Antenna 70cm30CROSS covers a complete 70cm band from 430 to 440MHz with low SWR. It 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…

This 70cm CROSS Antenna 70cm30CROSS is used as part of the “Big Leo Pack” with an added RHCP Kit.

For any use mount the antenna on a horizontal or vertical fiberglass pipe diameter of 40mm with a wall of at least 8mm or a full fiberglass 40mm rod.


70cm CROSS Antenna 70cm30CROSS Horizontal Mount


Electrical Specifications of 70cm CROSS Antenna 70cm30CROSS

Frequency Range: 430 – 440 MHz
Free Space Forward Gain: 16.7 dBi
Front-to-Back Ratio: 27 dB
-3 dB Horizontal Beamwidth: 27.8°
-3 dB Vertical Beamwidth: 29.3°
Polarization: Horizontal and Vertical. RHCP and LHCP with phase shift
Distance Between Dipoles: 173mm
Degrees: 90°
Isolation Between Antennas: More than 28dB
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 2 x 850W
Matching Method: Direct feed through common mode choke (current balun)
Connectors: 2 x “N”


70cm CROSS Antenna 70cm30CROSS Azimuth Radiation Pattern

70cm CROSS Antenna 70cm30CROSS Azimuth Radiation Pattern


Mechanical Specifications of 70cm CROSS Antenna 70cm30CROSS

Number of Elements: 30 (15 + 15)
Element Diameter: 4 mm Aluminum rod
Dipole Diameter: 8 mm Hard Copper tube plastic coated
Longest Element: 340 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: Goliath
Survival Wind Speed: 150 km/h
Net Weight: 4.3kg
Gross Weight: 6 kg
Transportation Length: 119 cm


70cm CROSS Antenna 70cm30CROSS Two Dipoles View. Added rear piece of aluminum boom for easy cable tight.

70cm CROSS Antenna 70cm30CROSS Two Dipoles View


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

Big Leo Pack Antennas for LEO Satellites 2m14CROSS 70cm30CROSS


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 PA432-CROSS-30-3.5AP


Twin Sister 2m antenna with the same 3.5m boom used in Big Leo Pack

Check all 70cm antennas: 70cm antennas

Or LEO Satellites Complete Packs

Watch the Leo Pack VIDEO here: https://youtu.be/UZTG3KSA-TA


Weight 5,1 kg


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