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7 tubes

Country:  United States of America (USA)
Manufacturer / Brand:  Sangamo Electric Co.; Springfield (IL)
Year: 1925 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7:
Main principle TRF without regeneration
Wave bands Broadcast only (MW).
Power type and voltage Storage and/or dry batteries
Power out
from Model: 7 tubes - Sangamo Electric Co.;
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).

One dial (primary tuning control knob).

External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932

All listed radios etc. from Sangamo Electric Co.; Springfield (IL)
Here you find 3 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.