1. Accurate installation of split antenna
1. When installing the antenna surface, select a flat ground, put the front of each antenna toward the ground and put it together, use the screw through the installation holes in turn, and then tighten the nut slightly. Then turn the installed antenna face up, face up, and observe if there are any ups and downs, if there are, adjust it properly until the palm is placed on the outer edge, inner edge, and middle of the antenna surface. The transition between the petals and petals is natural, and there is no ups and downs to form an accurate paraboloid, and then tighten each connecting nut in turn.
2. Installation of feed bracket
(1) The feed tray is directly above the antenna surface.
(2) The plane where the feed disk and the antenna edge are located is parallel. Make sure that the axis of the mounted LNB coincides with the axis of the antenna plane.
(3) The distance from the lower edge of the feed tray to the central axis of the antenna plane, that is, the focal length, should be consistent with the data provided in the installation manual.
In view of the above requirements, the length of the provided support rods should be compared before installation, and the angle of bending at both ends and the position of the mounting holes should be the same. Two mounting holes are opened at one end of the bracket rod for adjusting the focal length. For example: Zhongwei P150-6R 1.5m 6-lobed antenna specification provides a focal length of 570mm, and the three bracket rods provided have two 6mm mounting holes at a distance of 1cm at one end, which is connected to the outside of the antenna surface during installation On the installation hole along the edge, measure the focal length after installation. If it does not match, you can try another installation hole.
The precise installation of the feed support can improve the signal reception efficiency of the feed and LNB to the antenna reflection, and the precise installation of the antenna antenna surface forms an accurate parabolic reflection surface, which reduces the messy reflection of the signal and improves the useful signal. Reflection efficiency.
Second, how to play the split antenna
The efficiency of the antenna is mainly determined by the reflection efficiency of the antenna system and the reception efficiency of the feed system (Editor's Note: There is only one antenna efficiency, that is, the overall efficiency of the antenna. Breaking it down into several, this may be because the quality of the antenna has deteriorated : The reflective surface is difficult to be a true parabola, and the reflection becomes scattering; the focal length is also inaccurate, causing a feed offset, etc., so that everyone has no choice but to divide the antenna efficiency into several. A really good antenna only needs to be installed without errors You do n’t need anything to rub, and the efficiency will be very high. This kind of antenna is more expensive, and you do n’t see much. It is because of the low price that the antennas that need to be paid accurately have appeared.) To rub the split antenna to achieve the effect of the whole board antenna, you must rub the antenna surface to make the antenna surface integrated after rubbing. Rubbing the antenna surface is mainly to modify the joint between the petals. If the gap at the joint is too large and the original screw pressure is not suitable, you can drill a 6mm at the maximum opening of the joint Hole, then install a 6 * 12mm screw and tighten it with a nut to reduce the gap. Then wipe the front dust of all the seam parts, use 2cm wide double-sided adhesive tape, tear off the wrapping paper on one side, stick it to the seam, cover the seam, and smooth the seam, then tear off the top wrapping paper, Cut the thin aluminum foil paper of the same width (if not, you can use the cigarette wrapping paper), align and paste it on the double-sided adhesive tape, and smooth it. In this way, the splits become integrated, which not only reduces the diffuse reflection of the signal at the joint, improves the effective reflection efficiency of the antenna, but also avoids the reduction of the antenna reflection due to the accumulation of water and snow at the joint during rain and snow. Efficiency is a double benefit.
After the above precise installation and mounting of the split antenna, I believe that when watching some weak signals that were originally between the thresholds, it will definitely bring unexpected surprises to star-finding enthusiasts. I need not say more here, enthusiasts They have their own experiences.
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