• Country
• Germany

• Manufacturer / Brand
• Valvo GmbH, Radioröhrenfabrik; Hamburg

• Year
• 1928–1930

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 17485

• Number of Tubes
• 3

• Valves / Tubes
• A4100 L415D Mikrotron

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Valvo RRF - Valvo GmbH, Radioröhrenfabrik;

• Dimensions (WHD)
• 180 x 160 x 270 mm / 7.1 x 6.3 x 10.6 inch

• Notes
• Hersteller ist Lorenz

• Price in first year of sale
• 290.00 RM +

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

• Source of data
• Arlt's grosser Radiokatalog 1930 / Radiokatalog Band 2, Ernst Erb

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 36 models, 31 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Valvo GmbH, Radioröhrenfabrik; Hamburg