Model: Silvertone 7020 Ch= 101.807
Antique radios, Old Time Radios
Silvertone 7020 Ch= 101.807
Country:
United States of America (USA)
Manufacturer/Brand:
Sears, Roebuck & Co.; Chicago (IL)
Year: 1947
Type:
Radio or TunerBroadcast receiver (Radio).
Im Gegensatz zu Radioempfängern für kommerzielle und/oder militärische Zwecke und den frühen Empfängern für Morsezwecke nennen wir hier Radio bzw. Rundfunkempfänger. Aber: Gemäss internationaler Sprachregelung führt der Radiokatalog Band 1 alle Empfänger mit aktiven Bauteilen als RADIO. Wir unterscheiden hier ebenfalls nicht, ob mit Röhren bestückt, hybrid, mit Transistoren oder/und ICs.
Mod.-ID = 56935
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Schematics etc.: 4 (for
members)
Principle
Superhet with RF-stage; IF-Freq. 455 kHz; 2 AF-stage(s)Superhet with a preamplification stage.
Please use «To add informations to model» if you know more! Thanks.
Récepteur TSF superhétérodyne avec préamplification de HF.
Superhet mit HF-Vorstufe.
Tuned circuits
7 AM circuit(s);
Wave bands
Broadcast only (MW).Mittelwellenempfänger
Power type and voltage
AC/DC-set / 117 VoltAC-DC set (all-mains) - sometimes plus voltage range:
/ = 2 different voltages
- = voltage from-to
* = «Special»
Attention: Chassis mostly connected to deadly high tension!
Apparareil à tous-courants. Tensions mentionnées.
Wechsel- und Gleichstrom:
/ = 2 Spannungswahlen
- = von-bis
* = Fabrikwahl
Vorgeschalteten Trenntrafo verwenden! Chassis oft unter Starkstrom stehend!
Loudspeaker/pwr.out
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)Permanent magnet type moving coil speaker (principle by Rice-Kellog, without field excitation coil).
Haut-parleur avec système dynamique à aimant permanent (sans bobine d`excitation).
Permanentdynamischer Lautsprecher, also (modernes) Tauchspulenprinzip mit Selbsterregung bzw. Permanentmagnet statt Magnetspule. Siehe «Radios von gestern» Seiten 329ff.
/ 1.9 W
/ Ø 13.3 cm = 5.25 inch
www.radiomuseum.org
Model: Silvertone 7020 Ch= 101.807
Material
Modern plastics (no Bakelite or Catalin)Plastic case - not bakelite.
Caisse en plastique - pas en bekelite!
Moderner Kunststoff im Gegensatz zu Materialien wie Bakelit, Philit etc.
Shape
Tablemodel, Mantle/Midget/Compact but not a Portable (Mains only).
Valves / Tubes
6:
7B7
(more
for members)
Notes
The Silvertone model 7020 with chassis 101.807 from Sears, Roebuck & Co. uses a case in "Brown" color. Be aware that there are at least two other Silvertone models 7020 with other chassis which have no common connection and are built earlyer and later. Look at the rear of the chassis. There is a plate with the chassis number.
All together (for Rider's 16-1, 16-2 and 16-3) you find the following models within the same schematic: 7020 (Ch= 101.807), 7021 (Ch= 101.807A), 7054 (Ch= 101.808), 7080 (Ch= 101.809) and 7100 (Ch= 101.811). Beitman shows the following models on the same schematic: 7054 (Ch= 101.808), 7080, 7090 (Ch= 101.810) and 7100.
External source of data
Ernst Erb
Source of data
Machine Age to J(1-2) Stein 98Machine Age to Jet Age Volume 1 (2nd.Ed.), 1998, Mark V. Stein, Radiomania Publishing, Baltimore, USA. There is also an update edition in 2001.
Circuit diagram reference
Rider's Perpetual, Volume 16Ave, 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
Photofact Folders, SamsPhotofact Folders, Howard W. Sams. Normally referenced in schematics but when there is more ... (select the last field and enter the number in the free field).
(Date 3-49, 496-20, set 58, folder 20)
No further information
on
Silvertone 7020 Ch= 101.807 (Sears, Roebuck & Co.; Chicago (IL))
