Tube radio

The Roggebroodjewas the first radio for the commercial market and consists of three parts: a receiver, a transformer, and a speaker.The Bakelite speaker was often called the ‘pancake’.It was designed by Louis Kalff, who also designed the Evoluon in Eindhoven.The speaker was also available separately.On either side of the radio are tuning scales, and between them is a wavelength switch with the following numbered ranges: 1:1000-2000 metre, 2:300-600 metre, and 3:200-400 metre.