Sparton 570-M

Sparton 570-M ; Sparks-Withington Co (ID = 682894) Radio
Sparton 570-M ; Sparks-Withington Co (ID = 2471224) Radio Sparton 570-M ; Sparks-Withington Co (ID = 2471225) Radio
Sparton 570-M ; Sparks-Withington Co (ID = 2471226) Radio
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Sparton 570-M ; Sparks-Withington Co (ID = 2471224) Radio
Sparks-Withington Co: Sparton 570-M [Radio] ID = 2471224 1400x1050
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For model Sparton 570-M, Sparks-Withington Co., (Sparton); Jackson, Michigan
Country:  United States of America (USA)
Manufacturer / Brand:  Sparks-Withington Co., (Sparton); Jackson, Michigan
Year: 1939 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: 6A8GT 6K7GT 6Q7GT 6K6GT 6X5GT
Main principle Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast and Short Wave (SW).
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: Sparton 570-M - Sparks-Withington Co., Sparton
Material Wooden case
Shape Tablemodel, with any shape - general.
Collectors' prices  
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 11 = ca. 1940 and before
Mentioned in Collector's Guide to Antique Radios 4. Edition (Rider's 11-6)

All listed radios etc. from Sparks-Withington Co., (Sparton); Jackson, Michigan
Here you find 719 models, 344 with images and 646 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.