Tesla Minor

Handheld tube radio powered from a 67,5 V or 45 V anode battery and 1,5 V heater cell. It was possible to insert a mains supply instead of the batteries. The radio uses a ferrite antenna and a modern plastic cabinet which was unusually colorful for the time of its creation. 0,9 W power consumption, 45 mW output power. In 1958, a similar radio "Minor Duo" was made, this one had also a short-wave band and a docking station with a mains supply that could charge the built-in batteries.