NA4

ID = 15436

Country: Germany	Manufacturer/Brand: Koch & Sterzel AG; Dresden
Year: 1928 ?	Type: Power supply or battery or charger
Valves / Tubes	1: RGN354

Principle	not available
Wave bands	- without
Details	Power: B-Battery Eliminator (C)
Power type and voltage	Alternating Current supply (AC)
Loudspeaker/pwr.out	- - No sound reproduction output.
from Radiomuseum.org	Model: NA4

All listed radios etc. from Koch & Sterzel AG; Dresden
Here you find 73 models, 31 with images and 14 with schematics.