• Country
• Germany

• Manufacturer / Brand
• Isophon, E. Fritz & Co. GmbH.; Berlin

• Year
• 1933 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 15132

• • Brand: Isophon

• Power type and voltage
• No Power needed

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Frimaton - Isophon, E. Fritz & Co. GmbH.;

• Notes
• "Uhren-Lautsprecher" (Mauthe-Uhrwerk)

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Picture reference
• Das Gerät ist im Doppelband "Historische Radios" von Günther Abele abgebildet.

• Other Models

• Here you find 253 models, 242 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Isophon, E. Fritz & Co. GmbH.; Berlin