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Silvertone 81

Country:  United States of America (USA)
Manufacturer / Brand:  Sears, Roebuck & Co.; Chicago (IL)
Year: 1927 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 6: CX301A CX301A CX300A or CX301A or CX112A CX301A CX301A CX112A or CX371A
Main principle TRF without regeneration; 3 AF stage(s)
Tuned circuits 3 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Storage and/or dry batteries / "A" storage battery 6, "C" acc. to tubes, "B" 67.5 + 45 + 135 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Model: Silvertone 81 - Sears, Roebuck & Co.; Chicago
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).

One dial (primary tuning control knob). The Sears model Silvertone E, 80, 81, F (R4430), 82, Power pack 82, J (R4433, H (R4432) have been made by King Mfg. Corp. and the schematics are shown in Gernsback page 207 to 209.
Silvertone 81: See remarks in the schematic. The tubes are copied from model 80 and may be wrong.
See also King model 81 with perhaps a different cabinet. See details and summaries about Sears catalogs etc.

Mentioned in Official Radio Service Manual and Complete Directory of all Commercial Wiring Diagrams (page 207 for King Mfg. Corp.)

Model page created by Ernst Erb. See "Data change" for further contributors.

All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)
Here you find 5339 models, 3107 with images and 3907 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.