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Police 108

Police 108; United American (ID = 771497) Car Radio
Police 108; United American (ID = 771498) Car Radio
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Police 108; United American (ID = 771497) Car Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  United American Bosch (Magneto Corporation); Springfield (MA)
alternative name
American Bosch Magneto
Year: 1931 ? Category: Car Radio, perhaps also + sound player/recorder
Valves / Tubes 7: 36 37 36 36 36 36 38
Main principle Superhet with RF-stage; ZF/IF 175 kHz
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Storage and/or dry batteries
Loudspeaker - This model requires external speaker(s).
Power out
from Model: Police 108 - United American Bosch Magneto
Material Metal case
Shape Chassis only or for «building in»

preset (readjustable) to police frequency(or local BC station); needs +B dry battery; separate speaker.

External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Here you find 412 models, 158 with images and 269 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.