• Country
• Germany

• Manufacturer / Brand
• Brandt (Roland Brandt); Berlin

• Year
• 1950–1952

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 1087

• • alternative name: Motorfahrzeug-Fabrik

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

• Number of Tubes
• 1

• Valves / Tubes
• ECF12

• Number of Transistors

• Semiconductors
• Tr.Gl.=Metal-rectif.

• Main principle
• RF Converter/Adapter (not voltage converter); Super Regenerativ

• Tuned circuits
• 2 FM circuit(s)

• Wave bands
• FM Broadcast Band Only

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: PR I W - Brandt Roland Brandt; Berlin

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 330 x 73 x 180 mm / 13 x 2.9 x 7.1 inch

• Notes
• UKW-Vorsatz als Pendel-Rückkopplungs-Audion.

• Net weight (2.2 lb = 1 kg)
• 2 kg / 4 lb 6.5 oz (4.405 lb)

• Price in first year of sale
• 76.00 DM

• Source of data
• Kat.d. Rundf.Gr.Handel 1950/51 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange Schaltungen der Funkindustrie, Buch 2

• Mentioned in
• Funkschau (5015)

• Other Models

• Here you find 237 models, 172 with images and 135 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Brandt (Roland Brandt); Berlin