37-84B (37-84, 37-84A) Code 122 Early

• País
• Estados Unidos

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

• Año
• 1936/1937

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 50555

• Imágenes
• Esquemas

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• Numero de valvulas
• 4

• Válvulas
• 6J7G 6J7G 6F6G 5Y4G

• Principio principal
• Superheterodino en general; ZF/IF 470 kHz; Super, reaction, but not adjustable

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

• Gama de ondas
• OM (onda media) solamente

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

• Altavoz
• Altavoz electrodinámico (bobina de campo)

• Potencia de salida
• 0.5 W (unknown quality)

• Material
• Madera

• de Radiomuseum.org
• Modelo: 37-84B Code 122 [Early] - Philco, Philadelphia Stg. Batt

• Forma
• Sobremesa tipo Capilla (upright, round top or pinted arch, not rounded edges only).

• Anotaciones

• Philco model 37-84B was the fourth and final generation (following models 80B, 81B, and 84B) of low cost 4-tube cathedrals that used a regenerative combined IF/detector stage in a superheterodyne circuit to maximize sensitivity with very few components.
  
  Three versions of 37-84B are known: Code 121 uses a chassis with the old style tube lineup of the previous model 84B. The two versions of 37-84B code 122 use more modern octal tubes. While the standard versions of these chassis are for 50-60 Hz AC power, there was also a 37-84A chassis for 25-40 Hz power (probably available for both codes 121 and 122). Note that the -A suffix is a chassis suffix, not to be confused with the main model number -B suffix, which indicates cathedral cabinet.
  
  The early version of code 122 has four vertical bars through the speaker opening. The late version has simple curvy lattice work in the lower part of the speaker opening. Code 121 has a cabinet similar to the late version of code 122, even though its tube lineup suggests it was chronologically first.

• Precio durante el primer año
• 20.00 $

• Ext. procedencia de los datos
• Ernst Erb

• Procedencia de los datos
• Collector's Guide to Antique Radios 4. Edition

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

• Mencionado en
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Documentación / Esquemas (1)
• Philco Radio 1928-1942 (Philco Service Bulletin # 244)

• Documentación / Esquemas (2)
• Machine Age to Jet Age II (page 212.)

• Documentación / Esquemas (3)
• Philco Folder No. PR-430 for 1937.

• Documentación / Esquemas (4)
• Cathedral & Tombstone Radios (page 194.)

• Otros modelos

• Donde encontrará 4033 modelos, 2216 con imágenes y 3682 con esquemas.
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