70cm Wideband CROSS Antenna 70cm46CROSS for Super LEO
The best 46 elements full range 430 – 440 MHz 70cm Wideband CROSS Antenna 70cm46CROSS for any radio modes like CW, SSB, FM, Q65, FT8, and all kinds of communications like EME, DX-ing, Contesting, FM work, and LEO satellites…
If you want to be “The Boss” this antenna or complete Super LEO is for you.
23 + 23 elements will ensure excellent gain and wideband characteristics for any communications you want.
70cm Wideband CROSS Antenna 70cm46CROSS for EME, DX-ing, Contesting, FM work, and part of Super LEO 430-440MHz
What does 70cm46CROSS mean?
- 70cm – 70cm band 430-440MHz
- 46 – 46 elements, 23 elements of horizontal polarization, and 23 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.
This 70cm CROSS Antenna 70cm46CROSS is used as part of the Super LEO Pack for Satellites LEO Antenna Set 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.
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.
Electrical Specifications of 70cm Wideband CROSS Antenna 70cm46CROSS
Frequency Range: 430 – 440 MHz
Free Space Forward Gain: 18.1 dBi
Front-to-Back Ratio: 30 dB
-3 dB Horizontal Beamwidth: 25.1°
-3 dB Vertical Beamwidth: 26°
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”
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 -28 dB. Much better than SM5BSZ suggested:
70cm Wideband CROSS Antenna 70cm46CROSS for Super LEO Azimuth Radiation Pattern
Mechanical Specifications of 70cm Wideband CROSS Antenna 70cm46CROSS Super LEO
Number of Elements: 46 (23 + 23)
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 Connectors: Included
Boom Length: 5.47 m
Single Antenna Length: 5.1 m
Boom Size: Tapered Boom 40×40 mm, 30×30 mm, 20×20 mm
Turning Radius: 3 m
Number of Boom Pieces: 5
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
Net Weight: 6 kg
Transportation Length: 119 cm
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!
If this 70cm Wideband CROSS Antenna 70cm46CROSS is too big for you:
Look at 30 elements version 70cm30CROSS
or 16 elements rear mount version 70cm16CROSS
Check all 70cm antennas: 70cm antennas