• Country
• Germany

• Manufacturer / Brand
• Hartig & Helling, H&H; Essen und Bochum

• Year
• 1993

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 161612

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Various materials

• from Radiomuseum.org
• Model: Klein-Kopfhörer KH25 - Hartig & Helling, H&H; Essen

• Shape
• Miscellaneous shapes - described under notes.

• Notes
• Klein-Kopfhörer KH 25, Frequenz: 20 - 20.000 Hz, Impedanz: 32 Ohm, Empfindlichkeit: 100 dB.

• Net weight (2.2 lb = 1 kg)
• 0.043 kg / 0 lb 1.5 oz (0.095 lb)

• Price in first year of sale
• 12.00 DM

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Karlheinz Fischer. See "Data change" for further contributors.

• Other Models

• Here you find 68 models, 65 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hartig & Helling, H&H; Essen und Bochum