When choosing a television cable, it is important to know the criteria that determine its quality and guarantee good performance. What are the criteria for choosing a truly reliable cable?
Instructions
Step 1
Pay attention to the characteristic impedance. It must be at least 75 Ohm, since the amount of interference depends on it. As a rule, cables have different diameters - 4 mm and 6 mm. It is better to choose a cable with a large diameter, as it affects the protection against interference and distortion.
Step 2
When purchasing a cable, pay attention to its cut. The TV cable consists of a central core, a screen layer - aluminum foil and external insulation, which acts as a protection against damage. If there is no foil at all, it directly says that the cable is of poor quality and it is better not to take such a cable. In addition, the foil should not flake off, but should be glued with an overlap.
Step 3
There is no consensus on what metal the central core should be made of. Most consumers prefer an all-copper wire, but experts say that metal alloy wire performs its functions just as well, and is cheaper. The best option: the foil is equipped with a copper braid, and the insulation must be pressed very tightly against it. Braid and foil reduce signal loss due to radiation, so the image quality will be higher.
Step 4
Choose a cable with the highest possible insulation so that rainwater does not fall under it if the antenna is installed on a roof or on a balcony. If water gets inside, the foil will break down and the cable itself will very quickly become unusable.
Step 5
When calculating the footage, take into account all descents, ascents, and turns and do not forget to leave some in reserve in case you need to rearrange the TV in the apartment. Take care of purchasing quality connectors and splitters in advance. Do not use homemade twists or solders. Remember that the quality of the image and the duration of the cable will depend on this.
