87A Chassis Only

Patterson Radio Co. / Electric Co.; Los Angeles, CA

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  • Anno
  • 1937
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 50355

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 Specifiche tecniche

  • Numero di tubi
  • 8
  • Principio generale
  • Supereterodina con stadio RF; ZF/IF 465 kHz; 2 Stadi BF
  • N. di circuiti accordati
  • 9 Circuiti Mod. Amp. (AM)
  • Gamme d'onda
  • Onde medie (OM) e più di 2 gamme di onde corte (> 2 x OC).
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 110-125; 220-250 Volt
  • Altoparlante
  • AP elettrodinamico (bobina mobile e bobina di eccitazione/di campo) / Ø 12 inch = 30.5 cm
  • Potenza d'uscita
  • 4 W (qualità ignota)
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: 87A Chassis Only - Patterson Radio Co. / Electric
  • Forma
  • Chassis o in scatola da montaggio
  • Annotazioni

  • This model is a chassis and 12" speaker sold without a cabinet. It was also used in the Patterson model 90.  It had three bands covering 15 to 550 meters, with an optional band covering 750 to 2300 meters. It is equipped with a tuning eye tube. It as advertised as being "climate proof," with all transformers, coils, and condensers (capacitors) vacuum impregnated. A high fidelity switch broadens the response curves of the intermediate frequency transformers.

    This chassis is the same as the 87 chassis except that this chassis has a 12" speaker while the 87 chassis has a 8" speaker.

    There is a tube lineup conflict between Riders and a Patterson advertising brochure, with the  Riders showing the rectifier tube as a 4 pin 5X3 while the brochure showing an octal 5Y4G.  Also, the brochure states that all tubes are the new "G" type tubes (6K7G, 6A8G, etc..) while Riders does not show the G tubes in the schematic. The model reflects the Riders tube lineup.

  • Prezzo nel primo anno
  • 67.50 USD
  • Fonte esterna dei dati
  • Ernst Erb
  • Riferimenti schemi
  • Rider's Perpetual, Volume 8 = 1937 and before
  • Bibliografia
  • Rider's 8-7, 8-8

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