Radiola Balanced Amplifier Type AF

• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• RCA (RCA Victor Co. Inc.); New York (NY)

• Anno
• 1924

• Categoria
• Amplificatore audio o mixer audio

• Radiomuseum.org ID
• 54290

• • alternative name: RCA Manufacturing || Victor Talking Machine

• Immagini
• Schemi

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• Numero di tubi
• 2

• Valvole
• WD11 WD11

• Tensioni di funzionamento
• Batterie a secco

• Altoparlante
• - Per cuffie o amplificatori esterni

• Materiali
• Mobile in legno, valvole visibili.

• Radiomuseum.org
• Modello: Radiola Balanced Amplifier Type AF - RCA RCA Victor Co. Inc.; New

• Forma
• Soprammobile con qualsiasi forma (non saputo).

• Dimensioni (LxAxP)
• 140 x 150 x 170 mm / 5.5 x 5.9 x 6.7 inch

• Annotazioni
• Battery setup:
  
  When the Radiola Balanced Amplifier is used with the Radiola III Receiver, a common "A"battery for both units is recommended. For lighting the filaments use five 1.5 Volt Dry Cells connected in parallel.
  Note: A two-volt storage battery may be used if desired.
  
  When the Radiola Balanced Amplifier is used with the Radiola III Receiver, a common "B"battery for both units is recommended.
  As the receiver uses 45 volts of "B" battery, and the Amplifier requires 90 volts of "B" battery, two additional 22.5 volt blocks (or one 45 volt block) will be required for the units when used in combination.
  
  For Grid bias one 4.5 volt Dry Cell is required as "C" battery.
  
  Push-pull output.
  The WD11 were often replaced by UX199, using adaptors. 60 mA from 3 V made only 0.18 W per UX199, while the WD11 drew 0.25 A from a 1.5 V battery = 0.375 W, practically twice as much. The price was the same: 6.50$.

• Prezzo nel primo anno
• 30.00 $

• Fonte esterna dei dati
• Ernst Erb

• Fonte dei dati
• Radio Collector`s Guide 1921-1932

• Bibliografia
• Radio Manufacturers of the 1920's, Vol. 3

• Letteratura / Schemi (1)
• - - Manufacturers Literature (Users Manual)

• Letteratura / Schemi (2)
• Adv. Radio Broadcast, May-Oct. 1924

• Altri modelli

• In questo link sono elencati 5132 modelli, di cui 3235 con immagini e 4167 con schemi.
  Elenco delle radio e altri apparecchi della RCA (RCA Victor Co. Inc.); New York (NY)