Szmaragd 901 OT 1791 television set

The Szmaragd 901 OT 1791 black-and-white television set is one of the development variants of TV models of the same name. The Szmaragd 901 allows the reception of 10 television channels (even though only one channel was available in Poland up until 1970). Numerous modifications and corrections were introduced to the original model, which improved the operation of the device. The modernised Szmaragd model 901 was equipped with a 12-channel switch and a 17-inch CRT. Contrast and brightness adjustment using a remote control was also introduced. In terms of the electrical system, it is a superheterodyne with 17 vacuum tubes, powered with alternating current from the mains and with a built-in magnetoelectric speaker. The design uses a cathode-ray tube with a deflection angle of 90°, which allowed the device to have shallower housing than the previous model. Manufacturer: Warszawskie Zakłady Telewizyjne, 1962 Inv. No.:MIM 39/VI-15 Model prepared on the basis of photogrammetric measurements Licence: CC BY-NC-SA Source: Objaverse 1.0 / Sketchfab