90 Lowboy Early

• País
• Estados Unidos

• Fabricante / Marca
• Philco, Philadelphia Stg. Batt. Co.; USA

• Año
• 1931

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 51220

• Imágenes
• Esquemas

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• Numero de valvulas
• 9

• Válvulas
• 24 24 27 24 24 27 45 45 80

• Principio principal
• Superheterodino con paso previo de RF; ZF/IF 175 kHz

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

• Gama de ondas
• OM (onda media) solamente

• Tensión de funcionamiento
• Red: Corriente alterna (CA, Inglés = AC) / 50 to 60 cycles, 115 Volt

• Altavoz
• Altavoz electrodinámico (bobina de campo)

• Material
• Madera

• de Radiomuseum.org
• Modelo: 90 Lowboy [Early] - Philco, Philadelphia Stg. Batt

• Forma
• Consola baja, patas más cortas del 50%.

• Anotaciones

• Models 90 and 90A were available in a cathedral, a lowboy, and a highboy cabinet. The chassis was made in three versions - an early model 90 and 90A with two 45 output tubes in push-pull, a middle version with one 47 output tube, and a late version with two 47 output tubes. Model 90 is for 115 VAC 50-60 Hz; model 90A is for 115 VAC 25-60 Hz.

  The models 90 and 90A "early" and "middle" have a 4-gang tuning condenser plus 3 tuned IF circuit - both with IF 175 (Rider's change note 8-3). The version "middle", which are above serial number 237,001, of the model 90 and 90A has tubes: 24 RF, 27 osc, 24 1st det., 24 IF, 27 2nd det. rect., 27 det. amp., 27 1st AF amp, 47 output and 80 rectifier. The "late" model 90 and 90A again have push-pull output but with 2 x 47 tubes. See Rider's Philco 3-35 for IF 260 kHz. Applied on models serial B-32001 to B-35000 and above B-53100. They have a 3-gang tuning condenser and only 6 tuned circuits. The same differences can be found for all cabinets, both 90 and 90A: Baby Grand (Cathedral), Lowboy and Highboy (with a stretcher).

  The cathedral cabinet is the classic design by Edward L. Coombs, and is similar to the cathedral versions of model 21, 35, 46, and 70. [3331438-1133]

• Precio durante el primer año
• 89.75 $

• Ext. procedencia de los datos
• Ernst Erb

• Procedencia de los datos
• Radio Collector`s Guide 1921-1932

• Referencia esquema
• Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

• Mencionado en
• Philco Radio 1928-1942

• Documentación / Esquemas (1)
• Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data

• Documentación / Esquemas (2)
• Pre-War Consoles

• Documentación / Esquemas (3)
• Philco Folder 2674.

• Otros modelos

• Donde encontrará 4017 modelos, 2213 con imágenes y 3667 con esquemas.
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