• País
• Estados Unidos

• Fabricante / Marca
• General Household Utilities Co. (Grunow); Chicago Ill.

• Año
• 1936/1937

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 42614

• • Brand: Grunow (trade name)

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

• Numero de valvulas
• 12

• Válvulas
• 6K7 6A8 6K7 6K7 6H6 6C5 6C5 6C5 6J7 6L6 6L6 5Z3

• Principio principal
• Superheterodino con paso previo de RF; ZF/IF 465 kHz; 3 Etapas de AF

• Número de circuitos sintonía
• 9 Circuíto(s) AM

• Gama de ondas
• OM y dos OC

• Tensión de funcionamiento
• Red: Corriente alterna (CA, Inglés = AC) / 115 Volt

• Altavoz
• Altavoz electrodinámico (bobina de campo)

• Material
• Madera

• de Radiomuseum.org
• Modelo: Grunow 1297 Teledial Ch= 12W - General Household Utilities Co

• Forma
• Consola en general

• Ancho, altura, profundidad
• 29.5 x 42 x 16.75 inch / 749 x 1067 x 425 mm

• Anotaciones

• Beitman shows Grunow chassis: 12B, 12W for models: 1291, 1297 for the same schematic. The same is for Rider's page 7-35 for General Household. One might think both chassis are used for both models but we believe it is meant only that the Grunow chassis 12B is used for model 1291 and the 12W chassis for model 1297. Therefore we show two models, not 4 as other sources. This model has 12 metal tubes, 540-18,000 kc., Teledial, "beam" type power tube.

  The Grunow model 1297 is al least by cabinet and most of the chassis (or all) the same as Grunow model 1291 but Stein "Pre-War Consoles", page 96 shows a wrong model for 1297 - with 5 knobs. We don't know yet the correct model number for that.

  According to Rider's pgs 8-44 & 8-45 for Grunow, the power output tubes are 2-6F6 on chassis 12B (Model 1291), and 2-6L6 on chassis 12W (Model 1297). See this article containing Teledial models. Also Teledial models of other brands are covered. In particular the nine 1936/37 Grunow models presented in "Radio Retailing", March 1937, are linked.

• Precio durante el primer año
• 139.95 $

• Ext. procedencia de los datos
• Ernst Erb

• Referencia esquema
• Rider's Perpetual, Volume 7 = 1936 and before

• Mencionado en
• Pre-War Consoles

• Documentación / Esquemas (1)
• Beitman Radio Diagrams, Vol. 01, 1926-1938 (Rider's Perpetual, Volume 8 = 1937 and before)

• Documentación / Esquemas (2)
• Radio Retailing (Radio & Television R.) (March 1937.)

• Documentación / Esquemas (3)
• The Grunow Folder for 1937.

• Otros modelos

• Donde encontrará 138 modelos, 100 con imágenes y 126 con esquemas.
  Ir al listado general de General Household Utilities Co. (Grunow); Chicago Ill.