• Country
• Switzerland

• Manufacturer / Brand
• Carma, Präzisionswerkstätte; Winterthur

• Year
• 1924–1928

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 11788

• Main principle
• Crystal or Solid State Detector; Crystal-detection 1 circuit (no tubes)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Allwellen 101a - Carma, Präzisionswerkstätte;

• Dimensions (WHD)
• 140 x 100 x 50 mm / 5.5 x 3.9 x 2 inch

• Notes
• für Steckspulen.

• Price in first year of sale
• 12.00 SFr

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

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Radios von gestern, 2. Auflage (168)

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 17 models, 6 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Carma, Präzisionswerkstätte; Winterthur