Country:  Germany
Manufacturer / Brand:  Isaria Zählerwerke AG; München
Year: 1924/1925 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 1:
Main principle TRF without regeneration
Tuned circuits 1 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Storage and/or dry batteries
Loudspeaker - For headphones or amp.
Power out
from Model: AK - Isaria Zählerwerke AG; München
Material Metal case, TUBES VISIBLE
Shape Tablemodel, slant panel.
Dimensions (WHD) 190 x 260 x 125 mm / 7.5 x 10.2 x 4.9 inch
Notes Kurvenscheibe=zwangsläufig vor Selbstschwingung gehalten
External source of data E. Erb 3-907007-36-0
Source of data Radiokatalog Band 2, Ernst Erb

All listed radios etc. from Isaria Zählerwerke AG; München
Here you find 36 models, 27 with images and 11 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.