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W51 Typ 51

W51 Typ 51; Centrum-Radio, (ID = 1676910) Radio
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W51 Typ 51; Centrum-Radio, (ID = 1676912) Radio
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W51 Typ 51; Centrum-Radio, (ID = 483022) Radio W51 Typ 51; Centrum-Radio, (ID = 483023) Radio
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W51 Typ 51; Centrum-Radio, (ID = 1285291) Radio
Centrum-Radio,: W51 Typ 51 [Radio] ID = 1285291 933x659
Select picture or schematic to display from thumbnails on the right and click for download.
For model W51 Typ 51, Centrum-Radio, Gylling & Co.; Stockholm
Country:  Sweden
Manufacturer / Brand:  Centrum-Radio, Gylling & Co.; Stockholm
Year: 1940/1941 ? Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: 6J8EG 6K7G 6Q7G 6F6EG 5Y3G
Main principle Superheterodyne (common); ZF/IF 480 kHz
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast, Long Wave and 2 x Short Wave.
Power type and voltage Alternating Current supply (AC) / 115-245 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 20.5 cm = 8.1 inch
Power out 2 W (undistorted)
from Model: W51 Typ 51 - Centrum-Radio, Gylling & Co.;
Material Wooden case
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 470 x 300 x 295 mm / 18.5 x 11.8 x 11.6 inch

SW1: 30 - 86 m, SW2: 13 - 30 m. Variable bandwidth.

Model U52 is the AC/DC version of this receiver.

Similar to Centrum KW5.

Net weight (2.2 lb = 1 kg) 12 kg / 26 lb 6.9 oz (26.432 lb)
Price in first year of sale 325.00 SEK
Source of data -- Schematic
Mentioned in -- Original prospect or advert

Model page created by Lars-G. Lundelin. See "Data change" for further contributors.

All listed radios etc. from Centrum-Radio, Gylling & Co.; Stockholm
Here you find 180 models, 132 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Centrum-Radio,: W51 Typ 51
Threads: 2 | Posts: 5
Hits: 2174     Replies: 3
centrum: W51; original schema needed
Heribert Jung

Who has the original schema of this radio?

I fixed this radio and used a schema of a similar Centrum Radio. There are many differences, so I updatet the schema. Now most is new.

All values of the Rs are measured, there is no printing on the Rs.

All values of the Cs are from the prints of the original capacitors. 

I did not open the filter boxes and the box for LW and BC precircuits. So the parts inside the filters are not verified by looking.

One part at sound-control-switch is missing.

Therefore I like to get the original schema.


Svenskt by Google Translator:

Vem har den ursprungliga schemat för denna radio?

Jag fixade denna radio och använde ett schema av en liknande Centrum Radio. Det finns många skillnader, så jag updatet schemat. Nu har de flesta är ny.

Alla värden på dessa R är uppmätta, finns det ingen tryckning skivor.

Samtliga värden Cs är från trycken av de ursprungliga kondensatorer.

Jag öppnade inte filtret lådor och i rutan för LW och BC precircuits. delar inuti filtren inte verifieras genom att titta.

En del i sound-control-switch saknas.

Därför har jag vill få den ursprungliga schemat.


Ich suche noch immer den originalen Schaltplan. Die von mir geladenen Dateien habe ich bei der Aufarbeitung des Gerätes auf Basis eines anderen Centrum Modells mit gleicher Röhrenbestückung erstellt. Die Abweichungen sind aber erheblich.

Lars-G. Lundelin

When I refurbished my CENTRUM W51 I used the JW5 schematics but unfortunately, there are no values for components.
 As you can se on the tube placement sticker on the inside of the backplate, it shows KW5 which apparently is the same type as W51.
 I made an inquiry to SVERIGES RADIOHISTORISKA FÖRENING, if there are anyone with the relevant shematics for the W51. So let's see and wait.


Heribert Jung

Thank you, Lars, for the request to SVERIGES RADIOHISTORISKA FÖRENING.

Can you please upload the JW5 schema to the Modell Page of JW5.

You may send  your scans (300 dpi) to me for handling, if you have no time to handle the scans.

Best Regards,


Heribert Jung

Lennart Nilsson uploaded the original schema and told me: "W51 is identical with KW5, whose diagram was sent to me by a collector in Stockholm". Therefore I delete my temporary uploads. The new files are named like printed on the papers "KW5". 

Hits: 1381     Replies: 0
centrum: W51;
Lars-G. Lundelin

The intermediate frequency for this set is 486 KHz. 

Centrum-Radio,: W51 Typ 51
End of forum contributions about this model