Black-and-white television receiver `` PT ''.

Black and white televisionsDomesticBlack and white television receiver "PT" model 1933. Here is the beginning of the description of the TV in the magazine "Radiofront" No. 11 for 1934. The history of the TV in brief is as follows: The first model was developed by the television laboratory of the Research Institute of Communications and transferred in July 1933 to Radio Plant No. 2 for production. The production prototype of the "PT" TV set, which was designed in the laboratory of Radiozavod No. 2, was subject to a number of changes, both electrical and structural. All the main details of the circuit were recalculated, with the exception of the mechanical parts of the synchronizer. Since it is currently planned to manufacture a series of such televisions at one of the factories, a full description of the production sample is given below. TV "PT" is designed for the open (anode) output of the radio receiver (type "ECHS-2") and is designed to receive moving images, decomposed into 1200 elements.