[Arran]

I thought, like many countries in Europe, Russia/USSR had parts of the electrical grid built at different times, so a hodgepodge of mains voltages were used? Hence why their radios all seem to have tapped primaries with multiple voltage settings , all the way from 115 up to 250, almost like they were built for export.
Britain was even worse since they had electrification begin early there, which was one of the reasons AC/DC sets were almost as popular as they were in North America. Some areas had 175 volts AC, others had 200 volts, others 240, and still others used DC, whist others had no service at all. Also up until recent decades, they sold appliances with the plug missing because there was no national standard for electrical outlets until the 1940s.
Odd that this model 245 is 115 volts AC only, a lot of the export sets had tapped primaries, even my Canadian Philco, a Tropic clone has this.