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Sparton AC-62

Sparton AC-62 ; Sparks-Withington Co (ID = 1367381) Radio
Sparton AC-62 ; Sparks-Withington Co (ID = 1367383) Radio
Sparton AC-62 ; Sparks-Withington Co (ID = 1367385) Radio
Sparton AC-62 ; Sparks-Withington Co (ID = 1367386) Radio
Sparton AC-62 ; Sparks-Withington Co (ID = 216052) Radio
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Sparton AC-62 ; Sparks-Withington Co (ID = 1367381) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  Sparks-Withington Co., (Sparton); Jackson, Michigan
Year: 1927/1928 perfect model Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 401_McCullough 401_McCullough 401_McCullough 401_McCullough 401_McCullough C-171 BH
Main principle TRF without regeneration
Tuned circuits 4 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Model: Sparton AC-62 - Sparks-Withington Co., Sparton
Material Wooden case
Shape Tablemodel, with any shape - general.

The Sparton model AC-62 was replacing the AC 6-15 in October 1927 (with the same price). This is according to "Radio Manufacturers of the 1920's", volume 3, page 118. By the way: The AC 63 is an AC 62 in drop-front cabinet, with minor chassis changes.

The schematic is common for three models: AC-7, 62 and 63. But only the AC-7 has the two C-171 in parallel, the table models 62 and 63 employ only a single output tube. The circuitry is the same, except for the 2nd tube C-171. The second chassis for the "Transformer & Rectifing Unit" (spelling error in the schematic) is not counted for its tube.
See also the article here about different radio seasons.

Price in first year of sale 188.00 $
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965
Literature/Schematics (1) Sparton Radio Service Manual (Sparton Manual 1, Bulletin 4-1,2, Bulletin 1-3)

All listed radios etc. from Sparks-Withington Co., (Sparton); Jackson, Michigan
Here you find 720 models, 346 with images and 647 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.