G274A

• Country
• Italy

• Manufacturer / Brand
• Geloso SA; Milano

• Year
• 1953–1955

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 85104

• Picture
• Schematics

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

• Number of Tubes
• 7

• Valves / Tubes
• 12SL7GT 12SL7GT 6L6G 807 807 5R4GY 5Y3

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110, 125, 140, 160, 220, 280 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 75 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: G274A - Geloso SA; Milano

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 440 x 220 x 232 mm / 17.3 x 8.7 x 9.1 inch

• Notes
• Amplificatore 75-100 W di bassa frequenza. 2 entrate microfono e 2 fono.

• Net weight (2.2 lb = 1 kg)
• 17.2 kg / 37 lb 14.2 oz (37.885 lb)

• Source of data
• Riparazioni - Scuola Radio Elettra

• Mentioned in
• -- Original-techn. papers. (Bollettino Tecnico Geloso N. 47/48)

• Literature/Schematics (1)
• -- Original prospect or advert (Catalogo Generale Radioprodotti Geloso 1953 e 1954-55, p. 168)

• Author
• Model page created by Alessandro De Poi. See "Data change" for further contributors.

• Other Models

• Here you find 956 models, 803 with images and 724 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Geloso SA; Milano