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SV20aW; Siemens; D S.& (ID = 6843) Ampl/Mixer
SV20aW; Siemens; D S.& (ID = 377468) Ampl/Mixer SV20aW; Siemens; D S.& (ID = 2193672) Ampl/Mixer
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SV20aW; Siemens; D S.& (ID = 377468) Ampl/Mixer
Siemens; D S.&: SV20aW [Ampl/Mixer] ID = 377468 501x317
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For model SV20aW, Siemens; D (S.& Halske / S. Electrogeräte):
Handbuch des Deutschen Rundfunk-Handels 1937-1938
Country:  Germany
Manufacturer / Brand:  Siemens; D (S.& Halske / S. Electrogeräte)
Year: 1937–1939 Category: Audio Amplifier or -mixer
Valves / Tubes 5: AF7 RE604 RS241 RS241 RGQZ1,4
Semiconductors (the count is only for transistors) Tr.Gl.=Metal-rectif.
Main principle Audio-Amplification; 3 AF stage(s)
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 110; 125; 150; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 20 W (unknown quality)
from Model: SV20aW - Siemens; D S.& Halske / S.
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 460 x 205 x 315 mm / 18.1 x 8.1 x 12.4 inch
Notes Eingangs-Steuerspannung: 80 mV; Ausgangs-Impedanz: 15 und 140 Ohm.
Net weight (2.2 lb = 1 kg) 18.5 kg / 40 lb 12 oz (40.749 lb)
Price in first year of sale 561.00 RM
Source of data Handbuch WDRG 1937 / Radiokatalog Band 1, Ernst Erb
Circuit diagram reference Lange + FS-Bestückungstabellen

All listed radios etc. from Siemens; D (S.& Halske / S. Electrogeräte)
Here you find 2382 models, 1953 with images and 1243 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.