Excellent 30 Elements 70cm CROSS Antenna 70cm30CROSS
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.
A number of 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
- 30 – 30 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“
This 30-element 70cm CROSS Antenna 70cm30CROSS covers 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…
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.
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
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
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
Survival Wind Speed: 150 km/h
Wind Load: 0.13 m2
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.
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 just to assemble and have fun!
The old name of the antenna was PA432-CROSS-30-3.5AP
Check all 70cm antennas: 70cm antennas
Watch the Leo Pack VIDEO here: https://youtu.be/UZTG3KSA-TA