• Country
• Czechoslovakia

• Manufacturer / Brand
• Elektra, Pražský obchod potřebami pro domácnost; Praha

• Year
• 1951 ??

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 119368

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 3

• Valves / Tubes
• UCH21 UBL21 UY1N

• Main principle
• TRF with regeneration

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 120; 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch

• Power out
• 2 W (unknown quality)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Duodyn - Elektra, Pražský obchod

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 225 x 160 x 160 mm / 8.9 x 6.3 x 6.3 inch

• Mentioned in
• -- Original-techn. papers.

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

• Other Models

• Here you find 29 models, 27 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Elektra, Pražský obchod potřebami pro domácnost; Praha