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T90W; Tefag; Telephon (ID = 1092596) Radio
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T90W; Tefag; Telephon (ID = 1181944) Radio
Tefag; Telephon: T90W [Radio] ID = 1181944 700x444
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For model T90W, Tefag; Telephon Aktiengesellschaft vorm. J. Berliner:
radio is playing now as original after restoration
Country:  Germany
Manufacturer / Brand:  Tefag; Telephon Aktiengesellschaft vorm. J. Berliner
alternative name
Telephon-Fabrik, AG vorm. J. Berliner
Year: 1941–1943 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: EF13 ECH11 EBF11 EF11 EM11 EL12 EZ12
Main principle Superhet with RF-stage; ZF/IF 468 kHz
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 110; 127; 155; 220; 240 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 23 cm = 9.1 inch
Power out
from Model: T90W - Tefag; Telephon
Material Wooden case
Shape Tablemodel with Push Buttons.
Dimensions (WHD) 26.5 x 17 x 13.1 inch / 673 x 432 x 333 mm
Notes ZF-Bandbreite in Verbindung mit Tonblende verstellbar; acht Drucktasten für sieben Festfrequenzen und Tonabnehmer (Phono pickup); mit Ein-/Ausschalter gekoppelter Umschalter für Sprache/Musik.
Net weight (2.2 lb = 1 kg) 20.9 kg / 46 lb 0.6 oz (46.035 lb)
Source of data Radiokatalog Band 1, Ernst Erb
Mentioned in Funkgeschichte der GFGF (9606)

All listed radios etc. from Tefag; Telephon Aktiengesellschaft vorm. J. Berliner
Here you find 255 models, 172 with images and 107 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Tefag; Telephon: T90W
Threads: 2 | Posts: 4
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tefag: T90W ; Unable to resolve Schematic Voltage (155V)
Robert Sarbell


Please help me understand what I fail to resolve on the schematics for only a few models. . . . . .I have searched for more than 2 weeks and have detected only some possibilities); However, I can find no written reference source to any European (or Nord Export market) country which had the 155 volt AC power supply for the use by civilian or commercial or even the military markets!

Even the Lorenz and Tefag schematics for the L45W or the T90W depict the voltage setting on the 155V configuration on the voltage selector panel.

I suspect those few models of the Nord Export program may  have been for "Very peculiar customers".



NOTE: I have been told by one old technician that voltage may have been placed there for "test purposes" only.

Emilio Ciardiello

Dear Robert,

here in Italy the nominal AC voltage was not standardized to a single value. 160 V (RMS) was common in many towns, at least until the mid fifties. I remember the progressive switch to 220 V from the late fifties up to the early sixties, first in large towns and then in small ones and in rural areas. And I remember that, due to the small size of cables, the length of distribution lines, and to the poor quality of copper, in some buildings the average voltage was around 140 V.

Regards, Emilio

Robert Sarbell

Hello Emilio,

Thank you so much for that information. I  was certain that there were some places in Europe and the Eastern Republics wherein there was early influence OR support from USA conglomerates - specifically General Electric and the Bell Telephone subsidiaries (AEG and ITT).

I do know that GE had provided much assistance to the Soviets in the similar form of the REA programs in the USA - installing the infrastructure for AC power distribution lines. This was done in the late 1920s and early 1930s. HOWEVER, I have not yet determined or corroborated the specifics of the voltages available for the residential or commercial or even the military "markets" in which these programs participated. My research is still ongoing because of the various tube substitutions - and parts - which I find in this unusual Sonderklasse radio which I have acquired.

Perhaps some of our members from the Eastern European countries can "enlighten us" about this electrical matter - there is NO pun intended for that observation!




Hits: 1701     Replies: 0
tefag: T90W;
Andreas Steinmetz

Wichtiger Reparaturhinweis: Vor dem Chassisausbau muß der Lautsprecher ausgebaut werden. Bei Nichtbeachtung zerbricht das Skalenglas!

Andreas Steinmetz

Tefag; Telephon: T90W
End of forum contributions about this model