TV set-top box `` UPT ''.
Everything else not included in the sectionsAntenna amplifiersThe TV set-top box "UPT" has been produced presumably since 1953 by several factories in the country. The set-top box is designed to increase the sensitivity of TVs. The set-top box was produced in three versions, for 1, 2 and 3 channels, respectively named as "UPT-1", "UPT-2" and "UPT-3". The design and layout of the attachment options are the same, the only difference is in the contours. The set-top box was connected to a TV set at 6.3 volts and an anode of 250 volts and, respectively, between the antenna and the TV. Read more about the prefix below.
