RA549A

Radiola (marque)

Data
Forum
Pictures
Collections

  • Year
  • 1934
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 103145
    • Brand: SFER

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • TRF without regeneration
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-240 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: RA549A - Radiola marque
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 380 x 470 x 210 mm / 15 x 18.5 x 8.3 inch
  • Notes
  • Superinductance. Loudspeaker 4283.
  • Mentioned in
  • -- Original prospect or advert
  • Author
  • Model page created by John Koster. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model is part of the collections of the following members.

 Forum

Forum contributions about this model: Radiola marque: RA549A

Threads: 2 | Posts: 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.

Attachments

Manfred Rathgeb, 02.Apr.20

Weitere Posts (2) zu diesem Thema.