• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• Sparks-Withington Co., (Sparton); Jackson, Michigan

• Anno
• 1937/1938

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 58503

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di tubi
• 12

• Valvole
• 6K7G 6A8G 6J7G 6K7G 6E5 6K7G 6R7G 6H6G 6J5G 45 45 5Y3G

• Principio generale
• Supereterodina con stadio RF; ZF/IF 456 kHz; 3 Stadi BF

• N. di circuiti accordati
• 9 Circuiti Mod. Amp. (AM)

• Gamme d'onda
• Onde medie (OM) e 2 gamme di onde corte (2 x OC).

• Tensioni di funzionamento
• Alimentazione a corrente alternata (CA) / 115 Volt

• Altoparlante
• AP elettrodinamico (bobina mobile e bobina di eccitazione/di campo) / Ø 12 inch = 30.5 cm

• Materiali
• Mobile in legno

• Radiomuseum.org
• Modello: Sparton 1268 Selectronne - Sparks-Withington Co., Sparton

• Forma
• Console con tastiera/pulsantiera.

• Dimensioni (LxAxP)
• 24.5 x 42 x 13 inch / 622 x 1067 x 330 mm

• Annotazioni

• Automatic tuning unit, called Seletronne by Sparks-Withington (Sparton). This was their first model with this feature, introduced in Summer 1937 at a price of $ 179.75. Aerial band matching transformers. Separate coils for each band. Tuning eye (not Viso-glo" anymore). Automatic frequency control - sold like this: "The SELECTRONNE contains no moving parts but the button switches....no motors...no complicated mechanisms. It is instantaneous and simple in operation as a door bell". Push-pull audio amplifier with triode output which drives the twelve inch electro-dynamic speaker with acoustic baffle. Alto-basso tone control. The Sparton model 1268 is covering standard broadcast 540 - 1750 kHz and two shortwave bands: 1750 - 6100 and 5900-18500 kc (kHz). Advertised: "Press one after the other of the six buttons and thus quickly sample the programs of the moment, from all six...without even a glance at the dial. There are no motors, no moving parts but the switch buttons. The tuning is expertly accurate. The response is full-toned. A touch of the band selector switch...the receiver instantly changes to an efficient, ultra-modern all wave radio model of surprising performance, ready to tune American and foreign broadcast and shortwave, Airplane, Police, Amateur and ship." By the way: The term "Selectronne" was already used in 1933 on a folder. But now (Nov. 11, 1937, "The spokesman review") could be told: "No Whiz! No Whine! No Whir!"

• Prezzo nel primo anno
• 180.00 $

• Fonte esterna dei dati
• Ernst Erb

• Fonte dei dati
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Riferimenti schemi
• Rider's Perpetual, Volume 9 = 1938 and before

• Bibliografia
• Pre-War Consoles (Rider's 9-25, 10-14)

• Altri modelli

• In questo link sono elencati 817 modelli, di cui 365 con immagini e 754 con schemi.
  Elenco delle radio e altri apparecchi della Sparks-Withington Co., (Sparton); Jackson, Michigan