RA549A

Radiola (marque)

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  • Anno
  • 1934
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 103145
    • Brand: SFER

 Specifiche tecniche

  • Numero di tubi
  • 6
  • Principio generale
  • A circuiti accordati (amplif. diretta) senza reazione
  • Gamme d'onda
  • Onde medie (OM) e onde lunghe (OL).
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 110-240 Volt
  • Altoparlante
  • AP magnetodinamico (magnete permanente e bobina mobile)
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: RA549A - Radiola marque
  • Forma
  • Soprammobile verticale (sviluppato in altezza; no cattedrale, sin decorazioni).
  • Dimensioni (LxAxP)
  • 380 x 470 x 210 mm / 15 x 18.5 x 8.3 inch
  • Annotazioni
  • Superinductance. Loudspeaker 4283.
  • Bibliografia
  • -- Original prospect or advert
  • Autore
  • Modello inviato da John Koster. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Collezioni

Il modello fa parte delle collezioni dei seguenti membri.

 Forum

Discussioni nel forum su questo modello: Radiola marque: RA549A

Argomenti: 2 | Articoli: 5

Dear members,

I have just joined radiomuseum.org and would like your advice getting started with the restoration of a Radiola 549A radio I bought recently.

First, I think it is identical (except for the grill) to the Philips 638 A, which is no surprise given the historical links between the Radiola and Philips companies. Is it safe then to assume it is OK to use 638 information such as the schematic posted for the Philips 638 here.

I do hope so because I found a detailed step by step restoration of the 638 described here (in French) which would be very useful.

Second, I plan to replace the capacitors. I can see their microfarad (and micromicrofarad) values in the schematic. But it's not clear to me what voltage rating they should be. A valve amp I built from a kit recently has capacitors with voltages ranging from 25V to 450V, so I am aware I need to be careful about this.

Lastly (for now) I can see one of the valves is broken as bits are rattling inside it. It's a E463 penthode, this one here.

I guess I can replace it with any of the ones marked as identical, right? Do you have any tips about buying valves? Like new versus used, ebay or known dealers or anything else?

Looking forward to your help

Best regards,

Will

 

 

William Smith, 29.Aug.20

Weitere Posts (3) zu diesem Thema.

Das ist mir erst jetzt aufgefallen, weil es beim Aus- und Einbau des Chassis irgendwo klemmte. Die Skala besteht aus zwei Teilen: Einem festen Rahmen mit nur den Wellenlängen (auf Bild 1 unten) und der einschiebbaren Karte mit den Stationsnamen (Bild 1 oben), die - weil nicht voll eingeschoben - die Ursache des Hängenbleibens  war. Dennoch durchdacht: Man kann die Karte von vorne herausziehen, ohne Eingriff in das Innere.

Allegati

Manfred Rathgeb, 02.Apr.20

Weitere Posts (2) zu diesem Thema.