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Sparton 69 Equasonne on Cabinet Speaker 29

Sparton 69 Equasonne on Cabinet Speaker 29 ; Sparks-Withington Co (ID = 1339168) Radio
 
Sparton 69 Equasonne on Cabinet Speaker 29 ; Sparks-Withington Co (ID = 1339169) Radio
 
Sparton 69 Equasonne on Cabinet Speaker 29 ; Sparks-Withington Co (ID = 1339170) Radio
Sparton 69 Equasonne on Cabinet Speaker 29 ; Sparks-Withington Co (ID = 1338671) Radio Sparton 69 Equasonne on Cabinet Speaker 29 ; Sparks-Withington Co (ID = 1339167) Radio
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Sparton 69 Equasonne on Cabinet Speaker 29 ; Sparks-Withington Co (ID = 1338671) Radio
Sparks-Withington Co: Sparton 69 Equasonne on Cabinet Speaker 29 [Radio] ID = 1338671 451x682
Select picture or schematic to display from thumbnails on the right and click for download.
For model Sparton 69 Equasonne on Cabinet Speaker 29, Sparks-Withington Co., (Sparton); Jackson, Michigan:
By courtesy of member Alan Douglas from his book "Radio Manufacturers of the 1920's", volume 3, page 120. This is the combination of Sparton Equasonne model 69 with the loudspeaker model 29 for $ 199.50. See also the combination with an open console without speaker for $ 147.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Sparks-Withington Co., (Sparton); Jackson, Michigan
Year: 1928/1929 perfect model Type: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: C-485 C-485 C-485 C-485 C-485 C-485 50 80
Principle TRF without reaction (non reg.dir.receiver)
Tuned circuits 4 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 3 taps, 100 to 110, 110 to 120 and 120 to 130 Volt
Loudspeaker Magnetic loudspeaker (reed) generic.
Power out
from Radiomuseum.org Model: Sparton 69 Equasonne on Cabinet Speaker 29 - Sparks-Withington Co., Sparton
Material Wooden case
Shape Console, Lowboy (legs < 50 %).
Notes

Combination of model 69 plus Cabinet Speaker 29
The Sparton 69 and 69-A Equasonne models have one dial (primary tuning control knob). These models share the same schematic: 69, 79-A and 89 without naming the tubes and we think that 69-A is existing too because it is named below (in Radio Retailing). The list "Quantity and Types of tubes" from Sparks-Withington name for the 69: 6 x 485 Sparton, 50 and 80. See also the Sparton 69 Equasonne Cabinet Set and the model 69.
The models 39, 69, 79-A, 89, 89-A, 99, 109 and 930 are the first "Equasonne" models. The tubes are the original line up, not replacement, according to the page "The quantity and types of tubes used in Sparton receiving sets" and of Rider's page Sparton 5-6, replacement for the C-485, C-484 or 484 would be the 485_Sparton. See also the article here about different radio seasons.

In "Radio Retailing" May 1933, page 47, "Tricks of the Trade" we can read for models Sparton 69-A, 79-A, 930AC, 931AC, 931DC, 301DC and 301AC: "Fourth section of band-pass selector, just preceding RF sometimes cannot be tuned to resonance with first three sections, producing weak reception and loss in selectivity. Give first, second and third selector trimmers 3 turns clockwise. This makes slightly less tuning capacity necessary for given frequency and fourth section selector can not be adjusted for resonance. Balance set in customary manner with oscillator and output meter and re-adjust kilocycle scale on dial by loosening it on shaft and re-setting."
 

Price in first year of sale 199.50 $
Mentioned in Rider's Perpetual, Volume 1 = 1931/1934 (1919 to 1931) (Rider's Sparton 1-7)
Literature/Schematics (1) Radio Manufacturers of the 1920s, Vol 3 (page 120)

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



All listed radios etc. from Sparks-Withington Co., (Sparton); Jackson, Michigan
Here you find 653 models, 277 with images and 586 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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