What TV our ancestors had? To remember everything
the TV now - not luxury, but a necessary thing in the house without which life is uninteresting. At many house on 2 - 3 TVs moreover one in kitchen (instead of the newspaper over which glanced behind food earlier). Nobody pays special attention to this device - is unpretentious, simple in management, works when pressing one button, demands any special leaving. Generally, it is simple “ box “.
What the equipment reached! And half a century more back the TV was an unprecedented miracle and luxury. Long saved up money for its purchase, independently constructed the antenna, suitable for reception of a signal. And each owner of this unusual device had to know what is a dipole (that is horizontally located part of the antenna) what is a feeder (decrease in a coaxial cable from the antenna to the receiver) what is the broadband antenna and as the cable to her shoulders fastens.
In 1963 my parents in the village bought is black - the white TV of the Lviv plant under the name “ Verkhovina “. The size of the screen was about 38 by 28 centimeters. Almost half-villages took part in production of the antenna. On a mast about 15 meters high lifted the antenna from copper tubes with a diameter of 15 - 20 mm. Its scope “ wings “ made as far as I remember, 2 by 4 - 5 meters. Length of tubes depended on the wavelength of the channel, necessary for reception. At that time yet half or quarter wavelength was not used. Besides the distance to a transmitting center made only 35 km. Strengthened this high-rise miracle - a construction wire extensions that wind did not break.
In those days for transfer of a television signal 12 channels were used. The TVs released by the Soviet industry had settings for one, three, five or twelve. But it did not mean that TV programs were broadcast on all these channels. For example, the TV with control for the first, second and third channels could be used only in Leningrad, Moscow and Kiev. For use of such TV in other region it was necessary to send him to a workshop for reorganization on the sixth canal at which devices in the next provinces from repeaters worked.
Setup of the TV after installation of the antenna and connection of a feeder represented nearly shaman kamlaniye. Everything depended on a zone of a consistent reception which then made, for example, for Moscow, 80 - 120 km. Further attenuation of a signal, smaller image sharpness and hindrances was observed. Impact on reception was exerted even with from where wind blows, being figuratively expressed. That is quality of the image depended on weather, time of day and a season, a geographical profile of the district and materials used for production of antennas.
But also when TVs only appeared, people already wanted bigger and the best. Very few people, even from old men, remember now how earlier over the screen it is black - white TVs pasted three-colored is red - Xing - a green film that it seemed that the image color.
And who remembers TVs 50 - x years of KVN - 49 and “ Leningrad “ T - 2? It is in general antiquity. The size of their screen made 10,5 by 14 centimeters. It is considered that the most suitable distance from which it is necessary to watch TV at normal sight is equal to approximately sevenfold height of the screen, it that did not get tired sight. Thus, it was necessary to watch KVN TV from distance 70 cm, and the others - 125 - 170 cm
to enlarge the image, the industry in addition let out magnifying lenses which were established in front of the screen.
The lens consisted of two convex glasses connected together in which filled in the distilled water. Poured by its method of a siphon, that is by means of a hose involved a mouth liquid from banks and let out it in a lens. Water had to flow down in it on a wall to prevent formation of air bubbles. Bubbles appeared when water temperature was lower than room. Therefore water should be bylovyderzhat about days in the vessel filled up to the top.
Over time in this water the deposit appeared. Cleared a lens by means of a rubber pear which was put on a rubber tube. It was lowered in a lens, and vigorous pressing a pear shook up dregs and exhausted it. This operation was repeated repeatedly. The muddy raid on lens walls if it did not manage to be washed away a water pressure from a pear, was removed a piece of the rubber sponge strengthened on a long soft wire with isolation. It was necessary to clean so that the wire did not touch a lens.
At turbidity of water it was poured out, the lens was well washed out the distilled water heated to 30 °C and then again filled in the fresh distilled water. It was not necessary to apply any chemicals to cleaning of a lens.
Besides, there were still troubles with sources and devices of power supply like autotransformers, and the user had to control manually indications of the voltmeter and tighten up it if tension changed. There were later voltage stabilizers which had to monitor observance of the mode automatically.
Besides, it was necessary to give periodically rest to the TV because radio tubes in it overheated and were burned with an overheat.
Generally, you appreciate that the modern TV does not cause almost any problems and easily copes with the help “ idler “ DU!