• Country
• Austria

• Manufacturer / Brand
• Minerva-Radio (Radiola-Radioapparate und Bestandteile W. Wohleber & Co) ; Wien

• Year
• 1952/1953

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 9880

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

• Number of Tubes
• 6

• Valves / Tubes
• 1R5T 1T4T 1S5T 3S4T UL41 UY41

• Main principle
• Superheterodyne (common); ZF/IF 451 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / 110-240 / 67,5 & 2 x 1,5 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Portable 531 - Minerva-Radio Radiola-

• Dimensions (WHD)
• 325 x 225 x 135 mm / 12.8 x 8.9 x 5.3 inch

• Notes
• Wellenbereich: 185...580 m. Tonblenden-Schalter an der Rückseite.
  Skalenlampe 10V / 0,05A.
  Bei Batteriebetrieb Endstufe nur 3S4T, UL41 wird nur bei Netzbetrieb dazugeschaltet.
  Rahmenantenne.

• Net weight (2.2 lb = 1 kg)
• 3.7 kg / 8 lb 2.4 oz (8.15 lb)

• Price in first year of sale
• 1,460.00 öS

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• -- Original-techn. papers. / Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Lange-Nowisch

• Mentioned in
• Museums Bote, Österr. (Heft 102/2000, S.10 ff, Gerätebeschreibung)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Other Models

• Here you find 631 models, 568 with images and 448 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Minerva-Radio (Radiola-Radioapparate und Bestandteile W. Wohleber & Co) ; Wien