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Sparton 69 and 69-A Equasonne

Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1356777) Radio
 
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1356779) Radio
 
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1356780) Radio
 
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1356781) Radio
 
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 666852) Radio
 
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1337759) Radio
 
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1337769) Radio
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 539137) Radio Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 539147) Radio
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 539142) Radio Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 539150) Radio
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1338773) Radio Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1816549) Radio
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1816550) Radio Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1816551) Radio
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1816552) Radio Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 1816553) Radio
Altre immagini: scorri con la barra rossa.
Sparton 69 and 69-A Equasonne ; Sparks-Withington Co (ID = 539137) Radio
Sparks-Withington Co: Sparton 69 and 69-A Equasonne [Radio] ID = 539137 604x454
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For model Sparton 69 and 69-A Equasonne, Sparks-Withington Co., (Sparton); Jackson, Michigan:
By courtesy of "antiqueradios.com"!
 
Paese:  USA (Stati Uniti d'America)
Produttore / Marca:  Sparks-Withington Co., (Sparton); Jackson, Michigan
Anno: 1928/1929 perfect model Categoria: Radio (o sintonizzatore del dopoguerra WW2)
Valvole 8: C-485 C-485 C-485 C-485 C-485 C-485 50 80
Principio generale A circuiti accordati (amplif. diretta) senza reazione
N. di circuiti accordati 4 Circuiti Mod. Amp. (AM)
Gamme d'onda Solo onde medie (OM).
Particolarità
Tensioni di funzionamento Alimentazione a corrente alternata (CA) / 3 taps, 100 to 110, 110 to 120 and 120 to 130 Volt
Altoparlante - Questo apparecchio richiede altoparlante/i esterno/i.
Potenza d'uscita
Radiomuseum.org Modello: Sparton 69 and 69-A Equasonne - Sparks-Withington Co., Sparton
Materiali Mobile in legno
Forma Soprammobile con qualsiasi forma (non saputo).
Annotazioni

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 in combination with speaker 29 and the model 69 Cabinet Set.
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."

We wonder about the prices of this radio only - for $ 149 and the Cabinet set for $ 147.
 

Prezzo nel primo anno 149.00 $
Quotazione  
Fonte esterna dei dati Ernst Erb
Fonte dei dati Radio Collector`s Guide 1921-1932
Riferimenti schemi Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Bibliografia The Radio Collector's Directory and Price Guide 1921 - 1965 (Rider's 1-7)
Letteratura / Schemi (1) Sparton Radio Service Manual (Sparton Manual 1, Bulletin 7-1, 2, Bulletin 6-3)


Elenco delle radio e altri apparecchi della Sparks-Withington Co., (Sparton); Jackson, Michigan
In questo link sono elencati 719 modelli, di cui 340 con immagini e 646 con schemi.



  
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