• Country
• Germany

• Manufacturer / Brand
• Emud, Ernst Mästling; Ulm

• Year
• 1927/1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 1494

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• TRF with regeneration; 3 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: TE4D - Emud, Ernst Mästling; Ulm

• Notes
• TE4B mit Heiztrafo

• Price in first year of sale
• 168.00 RM +

• Source of data
• Radio-Katalog 12, Walter Fritz 1927 / Radiokatalog Band 1, Ernst Erb

• Other Models

• Here you find 422 models, 328 with images and 231 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Emud, Ernst Mästling; Ulm