If you want to use satellite TV, and buying a large diameter antenna is too expensive for you, then this article will help you. It describes several options for making a satellite dish with your own hands, and perhaps this will lead you to the optimal solution to the problem.
When starting to design a parabolic antenna for satellite television, it is necessary to take into account the irradiator included in the converter and its parameters. There are two manufacturing options: by sticking on a matrix or by soldering a mesh and copper wire. The first allows you to ensure ease of control over the form during its manufacture, the second - has a lower mass and windage.
The parameters that characterize the antenna are its diameter, the shortest distance from the focus to the antenna reflector (the so-called focal length), the depth of the mirror and the angle of the aperture under which the plane of the mirror is visible.
Thanks to these values, the antenna parameters are calculated, then transferred to the graph paper, a parabola is built. It must be glued to a sheet of steel, the thickness of which should be five millimeters, and sawed out. So it turns out a knife, after which you need to choose a bearing and a rod. In this case, it is necessary to shorten the knife by a distance equal to half the diameter of the rod, and weld to it. To make a satellite dish with your own hands, it is necessary to make by welding a frame from a steel rod (with a diameter of eight to ten millimeters). The ribs must be bent over the knife, weld the bearing to the top of the frame.
The antenna frame must be installed on a level surface. In its center, a pipe is mounted vertically under the bearing. After fixing the washer on the bearing, which is slightly larger than its diameter, and equal in thickness to the future parabolic antenna, a knife is inserted on it. Thick concrete mortar is applied to the frame. The resulting matrix is dried for three to five days.
Starting the sticking process, a do-it-yourself satellite dish is performed in several ways. To simplify your task, the product should be divided into sectors (from six to eight). For strength, the thickness of the reflector must be increased and reinforced with radial ribs made of steel wire. For gluing a parabolic antenna, fiberglass and epoxy adhesive are used. First, automotive oil is applied to the matrix. A pipe is inserted into the washer. A washer is put on it, equal in height to the thickness of the reflector. Then a layer of resin and pieces of fiberglass are applied, which must be smoothed out to remove air bubbles. Paste the reflector with aluminum foil.
When you create a satellite dish with your own hands, you can use another option when forming a conductive surface. Why paint is applied to the reflective surface of a parabolic antenna, which includes metal powder bases. For example, silverfish. Having formed the thickness of the reflector of the desired size, it is fixed with nuts.
There is an option to create an antenna from papier-mâché, when newspapers passed through a meat grinder are used as filler. Glue is added to them and the composition is applied to the matrix.
Before you start implementing the project - a satellite dish with your own hands, you should consider several factors that influence its work. After all, the lower floors of the building, reinforced concrete, metal grilles with which windows are equipped can interfere with the functioning of the product.
There are various possibilities for making the antenna yourself: from beer cans, from a room antenna, from a copper cable. And you can use an existing factory satellite dish and add to it a self-made satellite dish.
Glue A4 sheets of paper to the product with adhesive tape and lay out along the concave edge. Cut out 5 pieces of coarse fabric for the antenna in the shape of its mirror. Put them on the plate in turn, grease with glue. On the resulting frame, treated with glue, put the cooking foil a day later. Glue the fabric again on the reverse side. A plastic water pipe is suitable for the converter. The antenna mirror must be covered from a spray can with a layer of paint of small thickness.