• Country
• Germany

• Manufacturer / Brand
• Ollmann, Bruno / Audiometer KG / Hörgeräte KG / Beoton; Essen

• Year
• 1952 ??

• Category
• Medical Technology

• Radiomuseum.org ID
• 344226

• Number of Tubes
• 3

• Valves / Tubes
• DF67 DF67 DL67

• Main principle
• Audio-Amplification; 3 AF stage(s)

• Wave bands
• - without

• Details
• Hearing aid

• Power type and voltage
• Dry Batteries / AA: 1,5 V & 30 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Beoton Hörgerät - Ollmann, Bruno / Audiometer KG

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 70 x 110 x 23 mm / 2.8 x 4.3 x 0.9 inch

• Notes

• Hörgerät für Hemd- bzw. Jackentasche, Kunststoff-/Metall-Gehäusehalbschalen

• Net weight (2.2 lb = 1 kg)
• 0.145 kg / 0 lb 5.1 oz (0.319 lb)

• Author
• Model page created by Wolfgang Gebert. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 11 with images and 13 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ollmann, Bruno / Audiometer KG / Hörgeräte KG / Beoton; Essen