• Paese
• USA (Stati Uniti d'America)

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

• Anno
• 1936

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 129933

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di tubi
• 4

• Valvole
• 77 77 42 80

• Principio generale
• Supereterodina (in generale); ZF/IF 470 kHz; Supereterodina con reazione non regolabile

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

• Gamme d'onda
• Solo onde medie (OM).

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

• Altoparlante
• AP elettrodinamico (bobina mobile e bobina di eccitazione/di campo) / Ø 19 cm = 7.5 inch

• Potenza d'uscita
• 0.5 W (qualità ignota)

• Materiali
• Mobile in legno

• Radiomuseum.org
• Modello: 37-84B Code 121 - Philco, Philadelphia Stg. Batt

• Forma
• Soprammobile a cattedrale o cupola (upright, round top or pinted arch, not rounded edges only).

• Dimensioni (LxAxP)
• 310 x 370 x 195 mm / 12.2 x 14.6 x 7.7 inch

• Annotazioni
• 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.
  
  The 37-84B code 121 is not documented in any of the usual sources (Rider, Ramirez, Philco service literature); its existence is known from the pictures attached here.

• Peso netto
• 5.8 kg / 12 lb 12.4 oz (12.775 lb)

• Fonte dei dati
• - - Data from my own collection

• Autore
• Modello inviato da Norbert Konersmann. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 4093 modelli, di cui 2225 con immagini e 3741 con schemi.
  Elenco delle radio e altri apparecchi della Philco, Philadelphia Stg. Batt. Co.; USA