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660C ; United American (ID = 778807) Radio
660C ; United American (ID = 778809) Radio
660C ; United American (ID = 778810) Radio
660C ; United American (ID = 1202548) Radio 660C ; United American (ID = 374741) Radio
660C ; United American (ID = 374742) Radio 660C ; United American (ID = 704102) Radio
660C ; United American (ID = 1202549) Radio 660C ; United American (ID = 1202550) Radio
660C ; United American (ID = 1202551) Radio 660C ; United American (ID = 1202552) Radio
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660C ; United American (ID = 1202548) Radio
United American: 660C [Radio] ID = 1202548 933x1244
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For model 660C, United American Bosch (Magneto Corporation); Springfield (MA):
Ebay User csco1166 Item 220982009025
Country:  United States of America (USA)
Manufacturer / Brand:  United American Bosch (Magneto Corporation); Springfield (MA)
alternative name
American Bosch Magneto
Year: 1936 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 6K7 6A8 6K7 6H6 6F5 6F6 or 6F6G 5Y3 or 5Z4
Main principle Superhet with RF-stage; ZF/IF 465 kHz
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast, Short Wave(s) and Police.
Power type and voltage Alternating Current supply (AC) / 105-125 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: 660C - United American Bosch Magneto
Material Wooden case
Shape Console with any shape - in general
External source of data Ernst Erb
Source of data The Radio Collector's Directory and Price Guide 1921 - 1965
Circuit diagram reference Rider's Perpetual, Volume 7 = 1936 and before
Mentioned in Pre-War Consoles
Literature/Schematics (1) Riders 7-35, 37 ; 9-5
Literature/Schematics (2) Collector's Guide to Antique Radios (7th Edition)

All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Here you find 410 models, 152 with images and 267 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.