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8-Kreis-Super 258W

8-Kreis-Super 258W; Nordmende, (ID = 664741) Radio
 
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8-Kreis-Super 258W; Nordmende, (ID = 22930) Radio
Nordmende,: 8-Kreis-Super 258W [Radio] ID = 22930 880x550
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For model 8-Kreis-Super 258W, Nordmende, Norddeutsche Mende-Rundfunk GmbH (Sterling), Bremen-Hemelingen
 
Country:  Germany
Manufacturer / Brand:  Nordmende, Norddeutsche Mende-Rundfunk GmbH (Sterling), Bremen-Hemelingen
Year: 1950/1951 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: ECH42 EAF42 EF41 EL41 EM4 Tr.Gl.=Metal-rectif.
Main principle Super-Heterodyne (Super in general); ZF/IF 473 kHz
Tuned circuits 8 AM circuit(s)
Wave bands Ready for FM, has Broadcast, Long Wave, Short wave.
Details
Power type and voltage Alternating Current supply (AC) / 110; 125; 150; 220; 240 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21 cm = 8.3 inch
Power out
from Radiomuseum.org Model: 8-Kreis-Super 258W - Nordmende, Norddeutsche Mende-
Material Wooden case
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 505 x 290 x 210 mm / 19.9 x 11.4 x 8.3 inch
Notes Vorbereitet für den Einbau des UKW-Pendlers UKW E1
Variable Bandbreite.
Achtung: im 3. Schaltplan ist die Zeichnung des Wellenschalters mit den Abgleichpunkten unzutreffend !
Im Schaltplan 4 ist nun der Wellenschalter richtig gezeichnet.
Net weight (2.2 lb = 1 kg) 12.5 kg / 27 lb 8.5 oz (27.533 lb)
Price in first year of sale 258.00 DM
Collectors' prices  
Source of data Kat.d. Rundf.Gr.Handel 1950/51 / Radiokatalog Band 1, Ernst Erb
Circuit diagram reference Lange-Nowisch
Mentioned in Funk-Technik (FT) (5017)
Picture reference Das Modell ist im «Radiokatalog» (Erb) abgebildet.


All listed radios etc. from Nordmende, Norddeutsche Mende-Rundfunk GmbH (Sterling), Bremen-Hemelingen
Here you find 1688 models, 1575 with images and 1211 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




 


Forum contributions about this model
Nordmende,: 8-Kreis-Super 258W
Threads: 1 | Posts: 3
Hits: 1904     Replies: 2
nordmende: 258W (258 W); (Bremen)
Enrico Bonisolo
17.Dec.08
  1

Hello! I have one of these Nordmende that has installrd the optional FM module (UKW teil) with ECF12 tube.It is in almost working condition but covers only a 4 Mhz portion of the FM band, from 94 to 98 Mhz. I suspect that it could be normal for this model, due to the dial graduated from 0 to 100 instead of Mhz; but I don't know. It halso have a poor selectivity and I suspect that it is a superrigenerative unit, looking to schematic I seen that it is a classic AM radio without 10,7 Mhz FM if transformers. Unfortunately there is no this adapter schematic online. If you have any information or knowledge about it, please let me know!

Best regards to all, Enrico.

 

Bernhard Nagel
17.Dec.08
  2

Dear Enrico,

the FM-unit you have looking for is the Nordmende UKW E1, schematics can be found at the model page. You are right, it is a true super regenerative receiver with only one tuned circuit. Therefore, selectivity is limited to this circuit design.

But I think, the tuning variation should be at least go from 86...100 MHz. About 4 MHz is much too less. Maybe there is something wrong with the inductive tuned circuit (Variometer). Please check the mechanical travel of the (feritte core?) which moves inside of the oscillator coil (only visible when the unit has been opened..). Perhaps a mechanical adjustment will fix this problem. Some pictures with the model page shows the interior of the UKW E1.

Bernhard Nagel

Dietmar Rudolph
17.Dec.08
  3

I suppose the UKW superregenerative module might be the UKW E1 from Nordmende.

Regards, Dietmar

 
Nordmende,: 8-Kreis-Super 258W
End of forum contributions about this model

  
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