Model: 620 Cat.No. Z-7450
Antique radios, Old Time Radios
620 Cat.No. Z-7450
Country:
United States of America (USA)
Manufacturer/Brand:
Spiegel Inc. Chicago, Illinois
Year: 1939 ?
Type:
Car RadioAutoradio - ist nicht immer als solches bezeichnet, da erst später mit Code unterschieden.
Mod.-ID = 59126
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New search for Radios etc.
Schematics etc.: 1 (for
members)
Principle
Super-Heterodyne (Super in general); IF-Freq. 456 kHz; 2 AF-stage(s)Superhet - normally without a preamplification stage (as far as known). Please use «To add informations to model» if you know more! Thanks.
Récepteur TSF superhétérodyne. Normalement sans préamplification de HF.
Superhet ohne Vorstufe.
Nicht immer war bei der Erfassung klar, ob der Empfänger eine Vorstufe aufweist oder nicht. Im Zweifelsfall kam das Gerät in diese Kategorie.
Tuned circuits
6 AM circuit(s);
Wave bands
Broadcast only (MW).Mittelwellenempfänger
Power type and voltage
Storage Battery for all / 6 Volt
Loudspeaker/pwr.out
Electro Magnetic Dynamic LS (moving-coil with field excitation coil)Electro magnetic dynamic loudspeaker (moving-coil principle by Rice-Kellog) with field excitation coil - mostly used as choke.
Haut parleur dynamique avec bobine d`excitation - plus souvent aussi utilisé pour le self.
Elektrodynamischer Lautsprecher mit Erregerspule für das Magnetfeld (Fremderregung), meist gleichzeitig als Siebglied dienend.
/ Ø 10.2 cm = 4 inch
www.radiomuseum.org
Model: 620 Cat.No. Z-7450
Valves / Tubes
6:
6A7
(more
for members)
Notes
Vibrator for +B
External source of data
Ernst Erb
Circuit diagram reference
Rider's Perpetual, Volume 13Ave, RD 2, Canandaigua, NY 14424-9564, USA.
For your information:
Other big collections of schematics for the USA are the books «Most-Often-Needed Radio Diagrams», compiled by M.N.BEITMAN (beginning: 1926-1938 = Vol. 1).
and folders from:
Howard W. Sams Company, 2647 Waterfront Parkway East Drive, Indianapolis, IN 46214-2041, Tel.: 1-800-GET-SAMS or 1-800-428-5331 or 7267.
Literature/Schematics
Beitman Radio Diagrams 1939Most-often-needed Radio Diagrams and Servicing Information, Compiled by M.N. Beitman, Supreme Publications. Al least some of the Books have been reprinted by Vintage Radio Co., P.O.Box 2045, Palos Verdes, CA 90274, USA.
No further information
on
620 Cat.No. Z-7450 (Spiegel Inc. Chicago, Illinois)
