[RadioSvit]

As already mentioned, the first model of the "people's" radio ARZ-49 turned out to be not very successful and reliable, and therefore, in two years, this radio was upgraded and produced at various enterprises under the indexes ARZ-51 and ARZ-52. The main changes in the design were the replacement of the selenium rectifier on the 6Ц5C кenotron and the replacement of the output radiation beam 30П1C with a 30-volt getter voltage on the tetrod 6П6С. Thus, this one of the simplest superheteradins in the USSR has become a 4-tube radio. In the photo ARZ-52 from my collection.The exterior model from the old differs only with variants of colors, matter and small changes in the design of the scale - the ARZ-49 inscription disappeared.

           

But on the chassis the changes are more prominent ...