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Let's dive into the era when radio was a window to the world, and electricity had not yet reached every home! In this video, we restore an old household thermogenerator - a device that gave people the opportunity to listen to the radio in the most remote corners of the USSR. We will study the history of the creation of thermogenerators, their structure and the principle of operation based on the use of heat to generate electricity. You will see unique illustrations from books from the 1950s, learn how much this miracle of technology cost, and witness the process of its restoration. This is not just a restoration, it is a touch of history!