A-4

RCA Victor (International), Montreal

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1939/1940
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 148882

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

 Specifiche tecniche

  • Numero di tubi
  • 7
  • Principio generale
  • Supereterodina con stadio RF; ZF/IF 455 kHz; 2 Stadi BF
  • N. di circuiti accordati
  • 7 Circuiti Mod. Amp. (AM)
  • Gamme d'onda
  • Onde medie (OM) e più di 2 gamme di onde corte (> 2 x OC).
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 105-125 Volt
  • Altoparlante
  • AP elettrodinamico (bobina mobile e bobina di eccitazione/di campo) / Ø 12 inch = 30.5 cm
  • Potenza d'uscita
  • 2 W (5 W max.)
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: A-4 - RCA Victor International,
  • Forma
  • Console con tastiera/pulsantiera.
  • Dimensioni (LxAxP)
  • 635 x 995 x 310 mm / 25 x 39.2 x 12.2 inch
  • Annotazioni
  • This RCA model A-4 (A4) has the broadcast band (540 - 1720 kc) plus the following four short wave bands: 49 (5.9 - 6.24 mc), 31 (9.41 - 9.69 mc), 25 (11.68 - 11.92 mc) and 19 (15.09 - 15.38 mc). The scale offers 6 push buttons for fixed stations on the broadcast band. There is a "Radio-Tone-Phono-Television switch" and a "television socket" plus a separate "phone socket". The choke field is for the magnetic field of the loudspeaker which has also a "hum neutralizing coil". The magic eye 6U5 is a bit hidden within the scale. With its RF stage (6SK7) and 7 tuned circuits the model A4 has a very good reception. The same applies for the table radio A3 which uses the same documentation and circuit. Power supply with rating A is for 50 to 60 cycles, the one with rating B is for 25 - 60 cycles, each 80 watts. The loudspeaker for A4 is RL70H-1 12 inch and the one for A3 is RL79-1 6 inch, both with impedance 3.4 ohms at 400 cycles.
  • Prezzo nel primo anno
  • 119.50 CAD
  • Fonte dei dati
  • -- Original-techn. papers.
  • Letteratura / Schemi (1)
  • The Winnipeg Tribune; 1940-04-29
  • Autore
  • Modello inviato da Ashis Mukerjea. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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Discussioni nel forum su questo modello: RCA Victor: A-4

Argomenti: 1 | Articoli: 1

This is the warning sticker on the model RCA Montreal Canada model A4:
 

Warning  Any person installing or operating this radio receiving set without having obtained a licence from the Ministry of transport of Canada is liable to be prosecuted and sentenced to a penalty not exceeding fifty dollars and three months emprisonment.
No person shall sell any radio receiving set to any person for installation or operation until the purchaser has produced for inspection by the vendor of his licence to operate such set.
No person shall service a radio receiving set until the owner thereoff produces to such person his licence to operate such set.
 
      Extract from Radio Telegraph Act, Part 11, Regulation 31 (Effective 1st 1938)

This is typical for a 1939 radio in Canada. The text of the sticker was sent to me by guest Luc Doucet in Canada. Would be nice to publish the text before this ...

Ernst Erb, 23.Nov.10

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