• Country
• Poland

• Manufacturer / Brand
• Unitra DIORA - Radiowerk Dzierzoniow,

• Year
• 1948–1959

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 77330

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

• Number of Tubes
• 4

• Valves / Tubes
• UCH21 UCH21 UBL21 UY1

• Main principle
• Superheterodyne (common)

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• AC/DC-set / 125/225 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Pionier U2 [bakelite] - Unitra DIORA - Radiowerk

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 355 x 225 x 180 mm / 14 x 8.9 x 7.1 inch

• Notes
• There can be found 3 different cabinets for the Diora Pionier U2. For the "Pionier", the prototype was a radio set AGA, Sweden.

• Net weight (2.2 lb = 1 kg)
• 5.5 kg / 12 lb 1.8 oz (12.115 lb)

• Author
• Model page created by Hinrich Grensemann † 15.5.16. See "Data change" for further contributors.

• Other Models

• Here you find 271 models, 225 with images and 137 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unitra DIORA - Radiowerk Dzierzoniow,