• Country
• Finland

• Manufacturer / Brand
• Lehtinen & Osterlund

• Year
• 1927/1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 296505

• Number of Tubes
• 6

• Valves / Tubes
• A409 A409 unknown_Tube B409 unknown_Tube unknown_Tube

• Main principle
• TRF without regeneration; Neutrodyne

• Tuned circuits
• 3 AM circuit(s)

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

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Kaiku 6 - Lehtinen & Osterlund

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 810 x 280 x 320 mm / 31.9 x 11 x 12.6 inch

• Author
• Model page created by Timo Rantasaari. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Lehtinen & Osterlund