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3 Tube Multidyne Receiving Set Order= 57A 2670 plus 2673 or 2674

3 Tube Multidyne Receiving Set Order= 57A 2670 plus 2673 or 2674; Sears, Roebuck & Co. (ID = 1256818) Kit
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3 Tube Multidyne Receiving Set Order= 57A 2670 plus 2673 or 2674; Sears, Roebuck & Co. (ID = 1256818) Kit
Sears, Roebuck & Co.: 3 Tube Multidyne Receiving Set Order= 57A 2670 plus 2673 or 2674 [Kit] ID = 1256818 933x1071
Select picture or schematic to display from thumbnails on the right and click for download.
For model 3 Tube Multidyne Receiving Set Order= 57A 2670 plus 2673 or 2674, Sears, Roebuck & Co.; Chicago (IL):
Sears catalog 1925, page 10.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Sears, Roebuck & Co.; Chicago (IL)
Brand
 
Silvertone
Year: 1925 perfect model Category: Kit (Parts plus instruction) or building instructions only
Valves / Tubes 3: UV201A or WD12 UV201A or WD12 UV201A or WD12
Main principle TRF with regeneration; Reflex
Wave bands Broadcast only (MW).
Details
Power type and voltage Storage and/or dry batteries
Loudspeaker - This model requires external speaker(s).
Power out
from Radiomuseum.org Model: 3 Tube Multidyne Receiving Set Order= 57A 2670 plus 2673 or 2674 - Sears, Roebuck & Co.; Chicago
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Notes The Sears Catalog (57A....) 1925 shows on page 10 the 3 Tube Multidyne Receiving Set as order number 57A2670 1/4 with standard base sockets, not including tubes, batteries, loud speaker or aerial equipment for $ 48.50. 57A2673 1/4 are the accessories only for dry battery operation with either three WD12 or C12 tubes, four 22.5-volt or two 45-volt "B" batteries, one 4.5 volt "C" battery, three 1.5-volt dry cells, horn loudspeaker 12 inches wide, plug, ground and aerial equipment for $ 26.50 or 57A2674 1/4 are accessories for wet cell or staorage battery operation with one 6-volt storage battery (no "C" battery used) and 3 x UV201A or C301A tubes etc. for $ 35.95.

The incoming signal is amplified by means of tuned radio frequency. The signal is then passed on to the detector tube, where it is further amplified by means of regeneration. From the detector tube by use of reflex connections, the first tube is again brouht into use as an audio frequency amplifier, the thrid tube builds up the signal still further as a regular stage of audio frequency amplification.
Price in first year of sale 48.50 $ +
Literature/Schematics (1) Sears, Roebuck Catalogs (Silvertone)

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.



  
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