• Country
• Sweden

• Manufacturer / Brand
• Ericsson (L.M.), Allmänna Telefonaktiebolaget; Stockholm

• Year
• 1920 ?

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 263422

• Wave bands
• - without

• Material
• Various materials

• from Radiomuseum.org
• Model: Handheld carbon granule mircrophone - Ericsson L.M., Allmänna

• Literature/Schematics (2)
• Le Guide du Collectionneur TSF Biraud/Foster, Vol. II (page 461)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 14 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ericsson (L.M.), Allmänna Telefonaktiebolaget; Stockholm