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Radiola network lamp "Ruby" in 1958 was developed by the Riga State Electrotechnical Plant VEF. By 1956, the VEF plant had developed a series of receivers and radiometers on fingertips of various designs. Part of the units and chassis devices are unified. All the devices had a key switch, a rotatable internal magnetic antenna and an internal dipole for VHF. Receivers and class III radio stations had 2 speakers, class II and higher by 4. Names were presented with precious stones: Diamond, Amethyst, Aquamarine, Crystal, Rubin, Sapphire, Topaz, Amber. There was a river series: Cupid, Angara, Terek, Dvina and musical series: Concert, Melody, Symphony. There were other names. Some of the samples were transferred for production to other plants of the USSR, some were made by an experimental batch. The newspaper Vefietis (VEFovets) at the end of 1955 reported that the task of the Ministry of Radio Engineering Industry of the USSR about the development of 15 new models and the manufacture of their prototypes by designers of the VEF was completed. Most of the devices developed were demonstrated at the 1958 World's Fair in Brussels and were awarded prizes. Many developments are shown in 1959 at an exhibition in New York. Since 1956, the development of a dozen more promising receivers and a radiol has continued, including the Rubi radiolone presented to them. Radiola premium class "Ruby" was an experienced showpiece and made a small series.